Math Is Still...
The Physics of Cold Water May Have Jump-Started Complex Life
When seawater gets cold, it gets viscous. This fact could explain how single-celled ocean creatures...
5 months ago
When seawater gets cold, it gets viscous. This fact could explain how single-celled ocean creatures became multicellular when the planet was frozen during “Snowball Earth,” according to experiments.
The post The Physics of Cold Water May Have Jump-Started Complex Life...
symmetry magazine
Physics fashion and collider couture
Symmetry is back with more physics-themed Halloween costumes.
a year ago
Symmetry is back with more physics-themed Halloween costumes.
NeuroLogica Blog
Man Gets Pig Kidney Transplant
On March 16 surgeons transplanted a kidney taken from a pig into a human recipient, Rick Slayman. So...
9 months ago
On March 16 surgeons transplanted a kidney taken from a pig into a human recipient, Rick Slayman. So far the transplant is a success, but of course the real test will be how well the kidney functions and for how long. This is the first time such a transplant has been done into a...
Many Worlds
Getting To Know Rogue Planets
In our Earthling minds, planets exist in solar systems with a Sun in the middle and objects large...
a year ago
In our Earthling minds, planets exist in solar systems with a Sun in the middle and objects large and small orbiting around it. This is hardly surprising since planets are pretty much exclusively illustrated in solar systems and, until the onset of the 21st century, no other...
nanoscale views
Lots to read, including fab for quantum and "Immaterial Science"
Sometimes there are upticks in the rate of fun reading material. In the last few days:
A...
3 months ago
Sometimes there are upticks in the rate of fun reading material. In the last few days:
A Nature paper has been published by a group of authors predominantly from IMEC in Belgium, in which they demonstrate CMOS-compatible manufacturing of superconducting qubit hardware...
nanoscale views
APS March Meeting 2024, Day 3
My highlights today are a bit thin, because I was fortunate enough to spend time catching up with...
9 months ago
My highlights today are a bit thin, because I was fortunate enough to spend time catching up with collaborators and old friends, but here goes:
Pedram Roushan from Google gave an interesting talk about noisy intermediate-scale quantum experiments for simulation. He showed some...
IEEE Spectrum
Lord Kelvin and His Analog Computer
William Thomson, mourning the death of his wife and flush with cash from various patents related to...
6 months ago
William Thomson, mourning the death of his wife and flush with cash from various patents related to the laying of the first transatlantic telegraph cable, decided to buy a yacht. His schooner, the Lalla Rookh, became Thomson’s summer home and his base for hosting scientific...
The Works in...
The Maintenance Race was just the beginning
A new book from Stewart Brand, serialized on Works in Progress
a year ago
A new book from Stewart Brand, serialized on Works in Progress
The Roots of...
Levels of safety for AI and other technologies
What does it mean for AI to be “safe”?
Right now there is a lot of debate about AI safety. But...
a year ago
What does it mean for AI to be “safe”?
Right now there is a lot of debate about AI safety. But people often end up talking past each other because they’re not using the same definitions or standards.
For the sake of productive debates, let me propose some distinctions to add...
The Roots of...
The origins of the steam engine
This is a guest post written by Anton Howes and animated by Matt Brown of Extraordinary Facility....
a year ago
This is a guest post written by Anton Howes and animated by Matt Brown of Extraordinary Facility. This project was sponsored by The Roots of Progress, with funding generously provided by The Institute.
Steam power did not begin with the steam engine. Long before...
Confessions of a...
Cottesloe Fish Habitat Protection Area
Today I am teaching my first tutorial in the second year unit ‘Marine Systems‘, which will introduce...
over a year ago
Today I am teaching my first tutorial in the second year unit ‘Marine Systems‘, which will introduce students to their major project, which is centred around a field trip to the Cottelsoe Fish Habitat Protection Area (CFHPA). I’m pretty excited to introduce a few of my new ideas...
Math Is Still...
How to Tame the Endless Infinities Hiding in the Heart of Particle Physics
In the math of particle physics, every calculation should result in infinity. The set of techniques...
a year ago
In the math of particle physics, every calculation should result in infinity. The set of techniques known as “resurgence” points toward an escape.
The post How to Tame the Endless Infinities Hiding in the Heart of Particle Physics first appeared on Quanta Magazine
Math Is Still...
New Elliptic Curve Breaks 18-Year-Old Record
Two mathematicians have renewed a debate about the fundamental nature of some of math’s most...
a month ago
Two mathematicians have renewed a debate about the fundamental nature of some of math’s most important equations.
The post New Elliptic Curve Breaks 18-Year-Old Record first appeared on Quanta Magazine
Out-of-Pocket Blog
Structuring the Unstructured and ScienceIO | Out-Of-Pocket
how to train your model, the animated movie
a year ago
how to train your model, the animated movie
NeuroLogica Blog
Is Music Getting Simpler
I don’t think I know anyone personally who doesn’t have strong opinions about music – which genres...
8 months ago
I don’t think I know anyone personally who doesn’t have strong opinions about music – which genres they like, and how the quality of music may have changed over time. My own sense is that music as a cultural phenomenon is incredibly complex, no one (in my social group) really...
ToughSF
NTER: Nuclear Thermal-Electric Rocket
There
is a type of nuclear propulsion that can have most of the acceleration of a nuclear thermal...
over a year ago
There
is a type of nuclear propulsion that can have most of the acceleration of a nuclear thermal rocket but also the high Isp of an electric thruster.
Let’s have a look at nuclear ‘thermal-electric’ engines and
their advantages.
The title image is from 'dV: Rings of...
Math Is Still...
A Rosetta Stone for Mathematics
In 1940 André Weil wrote a letter to his sister, Simone, outlining his vision for translating...
7 months ago
In 1940 André Weil wrote a letter to his sister, Simone, outlining his vision for translating between three distinct areas of mathematics. Eighty years later, it still animates many of the most exciting developments in the field.
The post A Rosetta Stone for...
NeuroLogica Blog
A Bit of Energy Pseudoscience
Remember the 1980 film, The Formula? Probably not, because it was a mediocre film that did not age...
a year ago
Remember the 1980 film, The Formula? Probably not, because it was a mediocre film that did not age well. The basic plot is that Nazi chemists during WWII developed a formula for synthetic gasoline. A detective investigating a murder gets embroiled in a conspiracy to cover up the...
Out-of-Pocket Blog
The Obstacles To Value-Based Care | Out-Of-Pocket
taking on risk is easier said than done
a year ago
taking on risk is easier said than done
NeuroLogica Blog
Trust in Science
How much does the public trust in science and scientists? Well, there’s some good news and some bad...
a year ago
How much does the public trust in science and scientists? Well, there’s some good news and some bad news. Let’s start with the bad news – a recent Pew survey finds that trust in scientist has been in decline for the last few years. From its recent peak in 2019, those who answered...
Drew Ex Machina
GOES Video of Solar Eclipse – October 14, 2023
Solar eclipses have fascinated humanity since ancient times and the annular eclipse of October 14,...
a year ago
Solar eclipses have fascinated humanity since ancient times and the annular eclipse of October 14, 2023 was no different. Unlike a total solar eclipse where the […]
Asterisk
They May as Well Grow on Trees
The Future of Genetically Engineered Livestock
over a year ago
The Future of Genetically Engineered Livestock
NeuroLogica Blog
Should Japan Release Radioactive Water Into The Pacific?
Japan is planning on releasing treated radioactive water from the Fukushima nuclear accident into...
a year ago
Japan is planning on releasing treated radioactive water from the Fukushima nuclear accident into the ocean. They claim this will be completely safe, but there are protests going on in both Japan and South Korea, and China has just placed a ban on seafood from Japan. In a perfect...
Beautiful Public...
Wild Horses
The Bureau of Land Management wants to pay you $1,000 to adopt a wild horse. But the program has...
a year ago
The Bureau of Land Management wants to pay you $1,000 to adopt a wild horse. But the program has been criticized by animal rights advocates and subject to scrutiny by Congress.
The Roots of...
Video: Intro to progress studies at Learning Night Boston
I got invited to speak at Learning Night Boston and give an intro to progress studies: why study...
a year ago
I got invited to speak at Learning Night Boston and give an intro to progress studies: why study progress, and why do we need a new philosophy of progress? There are then a few minutes of Q&A. (It was in a bar and the audio quality is poor, sorry.)
Asterisk
Lies, Damned Lies, and Manometer Readings
America’s HVAC labor force is plagued by dishonesty and frequently incapable of meeting industry...
10 months ago
America’s HVAC labor force is plagued by dishonesty and frequently incapable of meeting industry standards. Interventions in indoor air quality are the next frontier in pandemic prevention — but are they up to the task?
nanoscale views
Electronic structure and a couple of fun links
Real life has been very busy recently. Posting will hopefully pick up soon.
One brief item. ...
8 months ago
Real life has been very busy recently. Posting will hopefully pick up soon.
One brief item. Earlier this week, Rice hosted Gabi Kotliar for a distinguished lecture, and he gave a very nice, pedagogical talk about different approaches to electronic structure calculations. ...
Asterisk
The “TESCREAL” Bungle
The TESCREAL “bundle of ideologies” is purportedly essential to understand the race to build...
6 months ago
The TESCREAL “bundle of ideologies” is purportedly essential to understand the race to build artificial intelligence, the ethical milieu of those building it, and the philosophical underpinnings behind Silicon Valley as a whole. But does the label actually tell us anything?
NeuroLogica Blog
Intuitive and Analytical Thinking
Here is a relatively simple math problem: A bat and a ball cost $1.10 combined. The bat costs $1...
a year ago
Here is a relatively simple math problem: A bat and a ball cost $1.10 combined. The bat costs $1 more than the ball. How much does the ball cost? (I will provide the answer below the fold.) This problem is the basis of a large psychological literature on thinking systems in the...
NeuroLogica Blog
Possible Sign of Life on Exoplanet
The James Webb Space Telescope spectroscopic analysis of K2-18b, an exoplanet 124 light years from...
a year ago
The James Webb Space Telescope spectroscopic analysis of K2-18b, an exoplanet 124 light years from Earth, shows signs that the atmosphere may contain dimethyl sulphide (DMS). This finding is more impressive when you know that DMS on Earth is only produced by living organisms, not...
nanoscale views
Michio Kaku and science popularization in the Age of Shamelessness
In some ways, we live in a golden age of science popularization. There are fantastic publications...
a year ago
In some ways, we live in a golden age of science popularization. There are fantastic publications like Quanta doing tremendous work; platforms like YouTube and podcasts have made it possible for both practicing scientists and science communicators to reach enormous audiences;...
Blog - Practical...
HEAVY CONSTRUCTION of a Sewage Pump Station - Ep 5
This is the fifth and final episode of a five-part pilot series to gauge your interest in "How It's...
a year ago
This is the fifth and final episode of a five-part pilot series to gauge your interest in "How It's Made"-esque heavy construction videos. Drop a comment or send me an email to let me know what you think! Watch on YouTube above or ad-free on Nebula here.
Eukaryote Writes...
Book Review: Cuisine and Empire
Things people nigh-universally like to eat: salt, fat, sugar, starch, sauces, meat, drugs...
11 months ago
Things people nigh-universally like to eat: salt, fat, sugar, starch, sauces, meat, drugs...
Quantum Frontiers
It from Qubit: The Last Hurrah
Editor’s note: Since 2015, the Simons Foundation has supported the “It from Qubit” collaboration, a...
a year ago
Editor’s note: Since 2015, the Simons Foundation has supported the “It from Qubit” collaboration, a group of scientists drawing on ideas from quantum information theory to address deep issues in fundamental physics. The collaboration held its “Last Hurrah” event at … Continue...
Probably...
PMFs and PDFs
It’s another installment in Data Q&A: Answering the real questions with Python. Previous...
5 months ago
It’s another installment in Data Q&A: Answering the real questions with Python. Previous installments are available from the Data Q&A landing page. If you get this post by email, the formatting is not good — you might want to read it on the site. pmf_and_pdf PMFs and PDFs¶ Here’s...
NeuroLogica Blog
Immune Cells to Fight Cancer
There is a recent medical advance that you may not have heard about unless you are a healthcare...
a year ago
There is a recent medical advance that you may not have heard about unless you are a healthcare professional or encountered it from the patient side – CAR-T cell therapy. A recent study shows the potential for continued incremental advance of this technology, but already it is a...
nanoscale views
The wormhole kerfuffle, ER=EPR, and all that
I was busy trying to finish off a grant proposal and paper revisions this week and didn't have the...
over a year ago
I was busy trying to finish off a grant proposal and paper revisions this week and didn't have the time to react in realtime to the PR onslaught surrounding the recent Nature paper by a team from Harvard, MIT, Fermilab, and Google. There are many places to get caught up on this,...
Math Is Still...
A New Agenda for Low-Dimensional Topology
This past October, dozens of mathematicians gathered in Pasadena to create the third version of...
10 months ago
This past October, dozens of mathematicians gathered in Pasadena to create the third version of “Kirby’s list” — a compendium of the most important unsolved problems in the field.
The post A New Agenda for Low-Dimensional Topology first appeared on Quanta Magazine
NeuroLogica Blog
It’s Not Possible – Until Suddenly It Is
There are a couple of recent stories that remind me that perhaps the most powerful thing in the...
a year ago
There are a couple of recent stories that remind me that perhaps the most powerful thing in the world is political will. Often politicians and motivational speakers will say something along the lines of, “We can do anything, if we put our minds to it.” While this sounds like...
Interaction Magic -...
Plastic archeology
The history, science and engineering of Lego bricks, on the cusp between trash and treasure.
a year ago
The history, science and engineering of Lego bricks, on the cusp between trash and treasure.
nanoscale views
Brief items
With the end of the semester approaching and various grant deadlines, it's been a very busy time. ...
a year ago
With the end of the semester approaching and various grant deadlines, it's been a very busy time. Here are some items I spotted this week (some new, some old):
This article from Quanta about the "Einstein tile" is great - I particularly like the animated illustration. This...
Math Is Still...
Computer Scientists Combine Two ‘Beautiful’ Proof Methods
Three researchers have figured out how to craft a proof that spreads out information while keeping...
2 months ago
Three researchers have figured out how to craft a proof that spreads out information while keeping it perfectly secret.
The post Computer Scientists Combine Two ‘Beautiful’ Proof Methods first appeared on Quanta Magazine
Math Is Still...
The Lawlessness of Large Numbers
Mathematicians can often figure out what happens as quantities grow infinitely large. What about...
a year ago
Mathematicians can often figure out what happens as quantities grow infinitely large. What about when they are just a little big?
The post The Lawlessness of Large Numbers first appeared on Quanta Magazine
Math Is Still...
Physicists Finally Find a Problem That Only Quantum Computers Can Do
Researchers have shown that a problem relating to the energy of a quantum system is easy for quantum...
9 months ago
Researchers have shown that a problem relating to the energy of a quantum system is easy for quantum computers but hard for classical ones.
The post Physicists Finally Find a Problem That Only Quantum Computers Can Do first appeared on Quanta Magazine
Uncharted...
100 Billion Humans
The world can carry them!
a month ago
The world can carry them!
Out-of-Pocket Blog
Dental Insurance, Value-Based Dental, and Beam Benefits | Out-Of-Pocket
Why doesn’t dental have value-based care?
a year ago
Why doesn’t dental have value-based care?
brr
McMurdo Postal Mail
How to mail things to and from Antarctica!
over a year ago
How to mail things to and from Antarctica!
brr
Sunset
Hunkering down for the winter!
a year ago
Hunkering down for the winter!
brr
South Pole Water Infrastructure
Fresh water from snow, at 70 below!
6 months ago
Fresh water from snow, at 70 below!
symmetry magazine
Encouraging a new community
Physicists advocate for getting community college students involved in research.
a year ago
Physicists advocate for getting community college students involved in research.
NeuroLogica Blog
Power-To-X and Climate Change Policy
What is Power-to-X (PtX)? It’s just a fancy marketing term for green hydrogen – using green energy,...
2 weeks ago
What is Power-to-X (PtX)? It’s just a fancy marketing term for green hydrogen – using green energy, like wind, solar, nuclear, or hydroelectric, to make hydrogen from water. This process does not release any CO2, just oxygen, and when the hydrogen is burned back with that oxygen...
Out-of-Pocket Blog
Placebos Are Getting Stronger | Out-Of-Pocket
Should we incorporate them into clinical practice?
a year ago
Should we incorporate them into clinical practice?
Uncharted...
The Earth Is Better with More People
A world with 2 billion people would be decaying, poor, brutal, violent, hopeless. With 100B, it...
3 weeks ago
A world with 2 billion people would be decaying, poor, brutal, violent, hopeless. With 100B, it would be rich, beautiful, vibrant, peaceful, hopeful.
Math Is Still...
How a DNA ‘Parasite’ May Have Fragmented Our Genes
A novel type of “jumping gene” may explain why the genomes of complex cells aren’t all equally...
a year ago
A novel type of “jumping gene” may explain why the genomes of complex cells aren’t all equally stuffed with noncoding sequences.
The post How a DNA ‘Parasite’ May Have Fragmented Our Genes first appeared on Quanta Magazine
NeuroLogica Blog
Dog Soundboards
I am a lifelong dog owner, and like many dog owners am often impressed with how smart my dogs have...
3 months ago
I am a lifelong dog owner, and like many dog owners am often impressed with how smart my dogs have been. They pick up on subtle body language and non-verbal cues, they seem to understand specific words, and they are capable of successfully communicating their wants and desires....
The Works in...
Works in Progress: 2023 Wrapped
Our most read work of the year
a year ago
Our most read work of the year
Asterisk
How Not To Predict The Future
Good forecasting thrives on a delicate balance of math, expertise, and…vibes.
9 months ago
Good forecasting thrives on a delicate balance of math, expertise, and…vibes.
Math Is Still...
Electric ‘Ripples’ in the Resting Brain Tag Memories for Storage
New experiments reveal how the brain chooses which memories to save and add credence to advice about...
7 months ago
New experiments reveal how the brain chooses which memories to save and add credence to advice about the importance of rest.
The post Electric ‘Ripples’ in the Resting Brain Tag Memories for Storage first appeared on Quanta Magazine
Quantum Frontiers
Discoveries at the Dibner
This past summer, our quantum thermodynamics research group had the wonderful opportunity to visit...
10 months ago
This past summer, our quantum thermodynamics research group had the wonderful opportunity to visit the Dibner Rare Book Library in D.C. Located in a small corner of the Smithsonian National Museum of American History, tucked away behind flashier exhibits, the Dibner is … Continue...
Math Is Still...
During Pregnancy, a Fake ‘Infection’ Protects the Fetus
Cells in the placenta have an unusual trick for activating gentle immune defenses and keeping them...
a year ago
Cells in the placenta have an unusual trick for activating gentle immune defenses and keeping them turned on when no infection is present. It involves crafting and deploying a fake virus.
The post During Pregnancy, a Fake ‘Infection’ Protects the Fetus first appeared...
The Works in...
Notes on Progress: Breakfast with g
IQ, lived experience, and my boyfriend’s underpants
over a year ago
IQ, lived experience, and my boyfriend’s underpants
Wanderingspace
Colorized View of Perseverance Landing
An artificially colorized view of Jezero Crater, showing the bird’s eye view of Perseverance...
over a year ago
An artificially colorized view of Jezero Crater, showing the bird’s eye view of Perseverance screaming towards Mars’s surface. The above image was enhanced by Kevin Gill into full color, taking images captured by Perseverance’s Lander Vision System Camera just after the heat...
The Works in...
Notes on Progress: Thinking like a dog
How dog brains could save us from dementia
over a year ago
How dog brains could save us from dementia
Math Is Still...
A Century Later, New Math Smooths Out General Relativity
Mathematicians prove a theorem that illuminates the geometry of universes with tiny amounts of mass....
a year ago
Mathematicians prove a theorem that illuminates the geometry of universes with tiny amounts of mass.
The post A Century Later, New Math Smooths Out General Relativity first appeared on Quanta Magazine
Math Is Still...
Can Space-Time Be Saved?
Curious connections between physics and math suggest to Latham Boyle that space-time may survive the...
2 months ago
Curious connections between physics and math suggest to Latham Boyle that space-time may survive the jump to the next theory of reality.
The post Can Space-Time Be Saved? first appeared on Quanta Magazine
symmetry magazine
A collaboration pairs Fermilab with fashion students
Fashion students at the College of DuPage successfully designed gear to protect Fermilab’s SPOT...
a year ago
Fashion students at the College of DuPage successfully designed gear to protect Fermilab’s SPOT robot from radioactive dust.
In a recent demonstration for Engineers Week in Chicago, an engineering physicist took the stage accompanied by an unusual guest: a...
ToughSF
Nuclear Conversion for Starship
There has been much discussion about converting the SpaceX Starship to use nuclear propulsion. It...
over a year ago
There has been much discussion about converting the SpaceX Starship to use nuclear propulsion. It would allow for a great increase in specific impulse and a massive extension of mission capabilities.
But is it actually worthwhile?
The image above is modified from...
ToughSF
How to Live on Other Planets: Uranus
The weirdest of the planets.
A blue giant, resting on its side.
Could we find a home in...
over a year ago
The weirdest of the planets.
A blue giant, resting on its side.
Could we find a home in the
Uranian system?
Description
Uranus is the fourth-largest
planet and the first ‘ice giant’. It orbits between 18.3 and 20.1 AU from the
Sun, making it four times more distant than...
Damn Interesting
From Where the Sun Now Stands
An American Indian man on horseback stood outlined against a steely sky past midday on 05 October...
a year ago
An American Indian man on horseback stood outlined against a steely sky past midday on 05 October 1877. Winter was already settling into the prairies of what would soon become the state of Montana.
Five white men stood in the swaying grass on the other side of the field,...
Math Is Still...
The ‘Accidental Activist’ Who Changed the Face of Mathematics
Throughout her 60-year career, Lenore Blum has developed new perspectives on logic and computation...
11 months ago
Throughout her 60-year career, Lenore Blum has developed new perspectives on logic and computation while championing women in mathematics and computer science. Now consciousness is on her mind.
The post The ‘Accidental Activist’ Who Changed the Face of Mathematics...
Math Is Still...
Are There Reasons to Believe in a Multiverse?
Several areas of physics suggest reasons to think that unobservable universes with different natural...
a year ago
Several areas of physics suggest reasons to think that unobservable universes with different natural laws could lie beyond ours. The theoretical physicist David Kaplan talks with Steven Strogatz about the mysteries that a multiverse would solve.
The post Are There...
Casey Handmer's blog
Part 6 Guns Under The Table
Part of the Mars Trilogy Technical Commentary Series. Contains spoilers for this chapter and earlier...
a week ago
Part of the Mars Trilogy Technical Commentary Series. Contains spoilers for this chapter and earlier chapters. Google Mars .kml. Literary commentary podcast. It’s hard to believe it’s been a year since the last update of this – in that time I read my children all of Green Mars...
Wanderingspace
URANUS FROM THE JAMES WEBB SPACE TELESCOPE
This is not natural light, nothing is from Webb. The infrared image combines data from two filters...
a year ago
This is not natural light, nothing is from Webb. The infrared image combines data from two filters which are shown in blue and orange,. The planet displays a blue hue in the resulting representative-color image which is similar to the planet’s actual color. But in reality Uranus...
Drew Ex Machina
The Promise of MIDAS: The First Experimental Early Warning Satellites
Today in the United States we almost take for granted the military’s ability to detect missile...
a year ago
Today in the United States we almost take for granted the military’s ability to detect missile launches anywhere on the planet and quickly determine whether it […]
IEEE Spectrum
How the Computer Graphics Industry Got Started at the University of Utah
Animation has come a long way since 1900, when J. Stuart Blackton created The Enchanted Drawing, the...
a year ago
Animation has come a long way since 1900, when J. Stuart Blackton created The Enchanted Drawing, the earliest known animated film. The 90-second movie was created using stop-motion techniques, as flat characters, props, and backgrounds were drawn on an easel or made from...
The Works in...
The Power of the Earth
On the future of geothermal energy
10 months ago
On the future of geothermal energy
Math Is Still...
The Best Neighborhoods for Starting a Life in the Galaxy
Some neighborhoods in the Milky Way may be better suited for making habitable planets than others. ...
11 months ago
Some neighborhoods in the Milky Way may be better suited for making habitable planets than others.
The post The Best Neighborhoods for Starting a Life in the Galaxy first appeared on Quanta Magazine
Math Is Still...
Why Mathematicians Re-Prove What They Already Know
It’s been known for thousands of years that the primes go on forever, but new proofs give fresh...
a year ago
It’s been known for thousands of years that the primes go on forever, but new proofs give fresh insights into how theorems depend on one another.
The post Why Mathematicians Re-Prove What They Already Know first appeared on Quanta Magazine
The Works in...
Unending World
A foretaste of Ch. 11 of Stewart Brand’s Maintenance on Books in Progress
2 months ago
A foretaste of Ch. 11 of Stewart Brand’s Maintenance on Books in Progress
IEEE Spectrum
The Saga of AD-X2, the Battery Additive That Roiled the NBS
Senate hearings, a post office ban, the resignation of the director of the National Bureau of...
4 months ago
Senate hearings, a post office ban, the resignation of the director of the National Bureau of Standards, and his reinstatement after more than 400 scientists threatened to resign. Who knew a little box of salt could stir up such drama?
What was AD-X2?
It all started in 1947 when...
Math Is Still...
‘Magical’ Error Correction Scheme Proved Inherently Inefficient
Locally correctable codes need barely any information to fix errors, but they’re extremely long. Now...
11 months ago
Locally correctable codes need barely any information to fix errors, but they’re extremely long. Now we know that the simplest versions can’t get any shorter.
The post ‘Magical’ Error Correction Scheme Proved Inherently Inefficient first appeared on Quanta Magazine
Quantum Frontiers
Let the great world spin
I first heard the song “Fireflies,” by Owl City, shortly after my junior year of college. During the...
a year ago
I first heard the song “Fireflies,” by Owl City, shortly after my junior year of college. During the refrain, singer Adam Young almost whispers, “I’d like to make myself believe / that planet Earth turns slowly.” Goosebumps prickled along my … Continue reading →
IEEE Spectrum
Chuck E. Cheese’s Animatronics Band Bows Out
That may have been the last time I entered a Chuck E. Cheese pizzeria. And yet, when I heard that...
2 weeks ago
That may have been the last time I entered a Chuck E. Cheese pizzeria. And yet, when I heard that the company was phasing out the animatronic bands from all but five locations by the end of this year, I felt a twinge of nostalgia. Much to my surprise, I was truly sad that the...
NeuroLogica Blog
AI As Legal Entities
Should an artificial intelligence (AI) be treated like a legal “subject” or agent? That is the...
a year ago
Should an artificial intelligence (AI) be treated like a legal “subject” or agent? That is the question discussed in a new paper by legal scholars. They recognize that this question is a bit ahead of the technology, but argue that we should work out the legal ramifications before...
Damn Interesting
Hunting For Kobyla
On a January day in 1964, something remarkable happened: Simon Wiesenthal took the afternoon off. He...
over a year ago
On a January day in 1964, something remarkable happened: Simon Wiesenthal took the afternoon off. He parked himself at a table on the terrace of Tel Aviv’s Café Roval, soaking up the sunshine as if he wished to bottle it. The friend he’d come to meet was late, but Wiesenthal had...
NeuroLogica Blog
Categorization and What’s In a Name
Categorization is critical in science, but it is also very tricky, often deceptively so. We need to...
11 months ago
Categorization is critical in science, but it is also very tricky, often deceptively so. We need to categorize things to help us organize our knowledge, to understand how things work and relate to each other, and to communicate efficiently and precisely. But categorization can...
Willem Pennings
ClockSquared improvements
My ClockSquared project has a long history – it goes all the way back to 2015, when it was simply...
a year ago
My ClockSquared project has a long history – it goes all the way back to 2015, when it was simply called the “Birthday word clock”. I haven’t spent much time on the project in recent years, but I’ve upgraded the internals a while ago and finally felt like writing a post about it....
Math Is Still...
What Makes Life Tick? Mitochondria May Keep Time for Cells
Every species develops at its own unique tempo, leaving scientist to wonder what governed their...
a year ago
Every species develops at its own unique tempo, leaving scientist to wonder what governed their timing. A suite of new findings suggests that cells use basic metabolic processes as clocks.
The post What Makes Life Tick? Mitochondria May Keep Time for Cells first...
The Roots of...
Four lenses on AI risks
All powerful new technologies create both benefits and risks: cars, planes, drugs, radiation. AI is...
a year ago
All powerful new technologies create both benefits and risks: cars, planes, drugs, radiation. AI is on a trajectory to become one of the most powerful technologies we possess; in some scenarios, it becomes by far the most powerful. It therefore will create both extraordinary...
Chris Grossack's...
Monoidal Monoidoidoids
So I was on the nlab the other day, and I saw a fantastic joke:
A 2-category is “just” a monoidal...
over a year ago
So I was on the nlab the other day, and I saw a fantastic joke:
A 2-category is “just” a monoidal monoidoidoid! Here’s a screenshot
in case the nlab page for 2-categories changes someday:
There’s a thing called the Category Theorist’s “Just”, which describes
the joy that many...
Math Is Still...
Math Is Still Catching Up to the Mysterious Genius of Srinivasa Ramanujan
Born poor in colonial India and dead at 32, Ramanujan had fantastical, out-of-nowhere visions that...
2 months ago
Born poor in colonial India and dead at 32, Ramanujan had fantastical, out-of-nowhere visions that continue to shape the field today.
The post Math Is Still Catching Up to the Mysterious Genius of Srinivasa Ramanujan first appeared on Quanta Magazine
Wanderingspace
Venus from Earth (with Stacking)
Image taken by @TheVastReaches. According to the photographer, “It takes just a few minutes to...
over a year ago
Image taken by @TheVastReaches. According to the photographer, “It takes just a few minutes to collect all the frames. This started as 6 video files, 45,000 frames total. Then they are stacked and combined.”
Out-of-Pocket Blog
The New (Experimental) Ways To Tackle The Mental Health Crisis | Out-Of-Pocket
let's try some new stuff to scale mental health care
a year ago
let's try some new stuff to scale mental health care
ToughSF
Advanced Solar Energy in Space: Part I
Solar Thermal Rockets can be efficient and have high performance. However, they remain...
over a year ago
Solar Thermal Rockets can be efficient and have high performance. However, they remain temperature-limited to an exhaust velocity of 12km/s.
How do we surpass this limit?
The limits
NASA's Suntower concept.
Solar Thermal Rockets have been shown to have great potential if...
IEEE Spectrum
Meet Mr. Internet: Vint Cerf
It was June 1973. For the past three months, Vint Cerf and Bob Kahn had been working together on a...
a year ago
It was June 1973. For the past three months, Vint Cerf and Bob Kahn had been working together on a problem Kahn had been pondering for some time: how to connect ground-based military computers seamlessly to communications satellites and mobile radios.
The two had been...
Out-of-Pocket Blog
“Mission-driven” should be more specific | Out-Of-Pocket
everything is a set of tradeoffs, let's be honest about that
8 months ago
everything is a set of tradeoffs, let's be honest about that
IEEE Spectrum
Inside the Three-Way Race to Create the Most Widely Used Laser
The semiconductor laser, invented more than 60 years ago, is the foundation of many of today’s...
5 months ago
The semiconductor laser, invented more than 60 years ago, is the foundation of many of today’s technologies including barcode scanners, fiber-optic communications, medical imaging, and remote controls. The tiny, versatile device is now an IEEE Milestone.
The possibilities of...
Out-of-Pocket Blog
23andMe, a healthcare fund idea, and the NHS | Out-Of-Pocket
Some random musings coming from London
2 months ago
Some random musings coming from London
IEEE Spectrum
The Meeting of the Minds That Launched AI
The Dartmouth Summer Research Project on Artificial Intelligence, held from 18 June through 17...
a year ago
The Dartmouth Summer Research Project on Artificial Intelligence, held from 18 June through 17 August of 1956, is widely considered the event that kicked off AI as a research discipline. Organized by John McCarthy, Marvin Minsky, Claude Shannon, and Nathaniel Rochester, it...
Math Is Still...
Hobbyist Finds Math’s Elusive ‘Einstein’ Tile
The surprisingly simple tile is the first single, connected tile that can fill the entire plane in a...
a year ago
The surprisingly simple tile is the first single, connected tile that can fill the entire plane in a pattern that never repeats — and can’t be made to fill it in a repeating way.
The post Hobbyist Finds Math’s Elusive ‘Einstein’ Tile first appeared on Quanta Magazine
Math Is Still...
Fresh X-Rays Reveal a Universe as Clumpy as Cosmology Predicts
By mapping the largest structures in the universe in X-rays, cosmologists have found striking...
9 months ago
By mapping the largest structures in the universe in X-rays, cosmologists have found striking agreement with their standard theoretical model of how the universe evolves.
The post Fresh X-Rays Reveal a Universe as Clumpy as Cosmology Predicts first appeared on Quanta...
NeuroLogica Blog
AI Companions – Good or Bad?
Often times the answer to a binary question is “yes”. Is artificial intelligence (AI) a powerful and...
5 months ago
Often times the answer to a binary question is “yes”. Is artificial intelligence (AI) a powerful and quickly advancing tool or is it overhyped? Yes. Are opiates useful medicines or dangerous drugs? Yes. Is Elon Musk a technological visionary or an eccentric opportunist? This is...
Marine Madness
Book Club: ‘The Island of Sea Women’ by Lisa See
Little is known about Jeju- a Korean island- occupied by brutal Japanese troops in the 1930s and...
over a year ago
Little is known about Jeju- a Korean island- occupied by brutal Japanese troops in the 1930s and ’40s, later liberated by US forces and turned over to the even more barbarous Korean regime whose wrongdoings were overlooked by both American and U.N. occupiers. Lisa See travels...
Inverted Passion
Why time seems to pass faster as we age
1/ I’ve been mega-obsessed with this feeling. A year as a 36-year-old seems so much shorter as...
9 months ago
1/ I’ve been mega-obsessed with this feeling. A year as a 36-year-old seems so much shorter as compared to when I was a kid or even as a teen. It seems cosmically unfair – we have fewer years to live, and each year flies by faster. 2/ But, why is that happening? My tentative...
nanoscale views
Materials characterization techniques – a brief glossary
Suppose someone has synthesized or found what they think is a new material. How do people studying...
11 months ago
Suppose someone has synthesized or found what they think is a new material. How do people studying materials (condensed matter physicists, materials scientists, materials chemists) figure out what they have and understand its properties? That's the puzzle-solving aspect of...
Math Is Still...
‘Embryo Models’ Challenge Legal, Ethical and Biological Concepts
With embryolike constructs built entirely from stem cells, researchers can revolutionize our...
a year ago
With embryolike constructs built entirely from stem cells, researchers can revolutionize our understanding of development. But how close to an embryo is too close?
The post ‘Embryo Models’ Challenge Legal, Ethical and Biological Concepts first appeared on Quanta...
Wanderingspace
Apollo Lunar Rover Video Corrected Speed and Stabilized
It is remarkable the difference watching this version where the time is corrected and camera...
over a year ago
It is remarkable the difference watching this version where the time is corrected and camera stabilized.. The film restorer behind DutchSteamMachine used AI to stabilize shaky footage and generate new frames in NASA moon landing films; increasing the frame rate, smoothed the...
nanoscale views
The Nobels, physics and chemistry
As you undoubtedly know, the 2023 Nobel in physics has been awarded to Pierre Agostini, Ferenc...
a year ago
As you undoubtedly know, the 2023 Nobel in physics has been awarded to Pierre Agostini, Ferenc Krausz, and Anne L'Huillier, for the development of techniques associated with attosecond-scale optical pulses. Here is the more popular write-up about this (including a good handwave...
NeuroLogica Blog
AI Copilots Are Coming
I’m going to do something I rarely do and make a straight-up prediction – I think we are close to...
2 months ago
I’m going to do something I rarely do and make a straight-up prediction – I think we are close to having AI apps that will function as our all-purpose digital assistants. That’s not really a tough call, we already have digital assistants and they are progressing rapidly. So I am...
The Works in...
The End of Combustion Vehicles
The final section of Ch.2 of Stewart Brand's Maintenance on Books in Progress
a year ago
The final section of Ch.2 of Stewart Brand's Maintenance on Books in Progress
Drew Ex Machina
NASA’s Explorer 18: The First Interplanetary Monitoring Platform
Among the greatest scientific achievements of the opening years of the Space Age was the...
a year ago
Among the greatest scientific achievements of the opening years of the Space Age was the characterization of Earth’s magnetic field and the discovery of what became […]
Sean Carroll
Thanksgiving
This year we give thanks for something we’ve all heard of, but maybe don’t appreciate as much as we...
over a year ago
This year we give thanks for something we’ve all heard of, but maybe don’t appreciate as much as we should: electromagnetism. (We’ve previously given thanks for the Standard Model Lagrangian, Hubble’s Law, the Spin-Statistics Theorem, conservation of momentum, effective field...
IEEE Spectrum
From Punch Cards to Python
In today’s digital world, it’s easy for just about anyone to create a mobile app or write software,...
3 months ago
In today’s digital world, it’s easy for just about anyone to create a mobile app or write software, thanks to Java, JavaScript, Python, and other programming languages.
But that wasn’t always the case. Because the primary language of computers is binary code, early programmers...
NeuroLogica Blog
Energy Demand Increasing
For the last two decades electricity demand in the US has been fairly flat. While it has been...
9 months ago
For the last two decades electricity demand in the US has been fairly flat. While it has been increasing overall, the increase has been very low. This has been largely attributed to the fact that as the use of electrical devices has increased, the efficiency of those devices has...
Asterisk
Fracking Eyeballs
How an alliance between psychologists and advertisers at the turn of the 20th century taught us how...
a year ago
How an alliance between psychologists and advertisers at the turn of the 20th century taught us how to measure (and monetize) human attention.
Out-of-Pocket Blog
2024 Healthcare Predictions, Out-Of-Pocket Style | Out-Of-Pocket
I'm not a fortune teller, I'm a fortune, teller
a year ago
I'm not a fortune teller, I'm a fortune, teller
Out-of-Pocket Blog
Malpractice, Expert Witnesses, and Lawsuits with Dr. Eric Funk | Out-Of-Pocket
Suits and White Coats
a year ago
Wanderingspace
Neptune from the James Webb Space Telescope
Webb’s latest image is the clearest look at Neptune's rings in 30+ years, and our first time seeing...
over a year ago
Webb’s latest image is the clearest look at Neptune's rings in 30+ years, and our first time seeing them in infrared light. Take in Webb's ghostly, ethereal views of the planet and its dust bands, rings and moons: https://go.nasa.gov/3RXxoGq #IAC2022
Math Is Still...
Math Proof Draws New Boundaries Around Black Hole Formation
For a half century, mathematicians have tried to define the exact circumstances under which a black...
a year ago
For a half century, mathematicians have tried to define the exact circumstances under which a black hole is destined to exist. A new proof shows how a cube can help answer the question.
The post Math Proof Draws New Boundaries Around Black Hole Formation first...
NeuroLogica Blog
Will AI Make Work Redundant?
Artificial Intelligence (AI) is coming for your job. This, at least, is increasingly conventional...
a year ago
Artificial Intelligence (AI) is coming for your job. This, at least, is increasingly conventional wisdom, but I’m not so sure. In a recent interview, Elon Musk predicted that AI would “make paid work redundant.” I encountered the same opinion watching the latest season of...
Cremieux Recueil
American Elections Are Unfair
Unfortunately, unfairness is baked in
a month ago
Unfortunately, unfairness is baked in
Math Is Still...
‘Quantum Memory’ Proves Exponentially Powerful
Researchers are exploring new ways that quantum computers will be able to reveal the secrets of...
2 months ago
Researchers are exploring new ways that quantum computers will be able to reveal the secrets of complex quantum systems.
The post ‘Quantum Memory’ Proves Exponentially Powerful first appeared on Quanta Magazine
Out-of-Pocket Blog
Scaling Organizations, Patient Payments, and Collections with Lora Rosenblum | Out-Of-Pocket
Why am I getting bills 6 months later, Lora pls help
a year ago
Why am I getting bills 6 months later, Lora pls help
Math Is Still...
Scientists Find a Fast Way to Describe Quantum Systems
After years of false starts, a team of computer scientists has found a way to efficiently deduce the...
7 months ago
After years of false starts, a team of computer scientists has found a way to efficiently deduce the Hamiltonian of a physical system at any constant temperature.
The post Scientists Find a Fast Way to Describe Quantum Systems first appeared on Quanta Magazine
NeuroLogica Blog
Nuclear Microreactors
The first nuclear powered vessel was completed in 1959. Since then there have been nuclear powered...
a year ago
The first nuclear powered vessel was completed in 1959. Since then there have been nuclear powered vessels in the oceans, including many nuclear submarines. The obvious advantage is that is such vessels can stay at see for long periods of time without refueling. These ships use...
Quantum Frontiers
Always appropriate
I met boatloads of physicists as a master’s student at the Perimeter Institute for Theoretical...
4 months ago
I met boatloads of physicists as a master’s student at the Perimeter Institute for Theoretical Physics in Waterloo, Canada. Researchers pass through Perimeter like diplomats through my current neighborhood—the Washington, DC area—except that Perimeter’s visitors speak math...
Chris Grossack's...
Talk - Where Are The Open Sets?
I was invited to give a talk at HoTTEST 2022, and was more than
happy to accept! Ever since I was...
over a year ago
I was invited to give a talk at HoTTEST 2022, and was more than
happy to accept! Ever since I was first learning HoTT I was curious how
we could be sure that theorems in HoTT give us corresponding theorems in
“classical” homotopy theory. Earlier this summer I spent a lot of...
NeuroLogica Blog
Update on AI Art
It’s been a while since I discussed artificial intelligence (AI) generated art here. What I have...
a month ago
It’s been a while since I discussed artificial intelligence (AI) generated art here. What I have said in the past is that AI art appears a bit soulless and there are details it has difficulty creating without bizarre distortions (hands are particularly difficult). But I also...
Sean Carroll
Thanksgiving
This year we give thanks for Arrow’s Impossibility Theorem. (We’ve previously given thanks for the...
over a year ago
This year we give thanks for Arrow’s Impossibility Theorem. (We’ve previously given thanks for the Standard Model Lagrangian, Hubble’s Law, the Spin-Statistics Theorem, conservation of momentum, effective field theory, the error bar, gauge symmetry, Landauer’s Principle, the...
Out-of-Pocket Blog
Ins and Outs of Fundraising Today | Out-Of-Pocket
Some stuff I’ve learned doing a little healthcare startup investing
a year ago
Some stuff I’ve learned doing a little healthcare startup investing
Eukaryote Writes...
Internet Harvest (2020, 2)
Internet Harvest is a selection of the most succulent links on the internet that I’ve recently...
over a year ago
Internet Harvest is a selection of the most succulent links on the internet that I’ve recently plucked from its fruitful boughs. Feel free to discuss the links in the comments. Also, semi-intentionally, none of the links in this harvest are COVID-19-related. If you want some...
Math Is Still...
A ‘Lobby’ Where a Molecule Mob Tells Genes What to Do
Highly repetitive regions of junk DNA may be the key to a newly discovered mechanism for gene...
10 months ago
Highly repetitive regions of junk DNA may be the key to a newly discovered mechanism for gene regulation.
The post A ‘Lobby’ Where a Molecule Mob Tells Genes What to Do first appeared on Quanta Magazine
Drew Ex Machina
Apollo A-002: Testing the Limits of the Launch Escape System
One of the more dangerous parts of a space mission is launch which is why almost all crewed...
2 weeks ago
One of the more dangerous parts of a space mission is launch which is why almost all crewed spacecraft have had launch abort options to cover […]
Eukaryote Writes...
Who invented knitting? The plot thickens
Last time on Eukaryote Writes Blog: You learned about knitting history. You thought you were done...
a year ago
Last time on Eukaryote Writes Blog: You learned about knitting history. You thought you were done learning about knitting history? You fool. You buffoon. I wanted to double check some things in the last post and found out that the origins of knitting are even weirder than I...
Asterisk
What I Won’t Eat
A reflection on ethics, animal cognition, and chocolate cake.
a year ago
A reflection on ethics, animal cognition, and chocolate cake.
Asterisk
Manufacturing Bliss
A growing community centered on the Bay Area is rediscovering the jhanas, a meditation technique...
8 months ago
A growing community centered on the Bay Area is rediscovering the jhanas, a meditation technique that practitioners claim could upend how we think about the brain — and transform our lives in the process.
Chris Grossack's...
Building Objects with Category Theory
Typically category theory is useful for showing the uniqueness
of certain objects by checking that...
a year ago
Typically category theory is useful for showing the uniqueness
of certain objects by checking that they satisfy some
universal property. This makes them unique up to unique isomorphism.
However, category theory can also be used in order to show that objects
exist at all, usually...
NeuroLogica Blog
Passive Solar Water Desalination
I know we are supposed to be worried about the world supply of fresh water. I have been hearing that...
a year ago
I know we are supposed to be worried about the world supply of fresh water. I have been hearing that at least for the last 40 years, and the statistics are alarming. According to the Global Commission on the Economics of Water: “We are seeing the consequences not of freak events,...
NeuroLogica Blog
Artificial Diamond Boom
The history of aluminum, and what is now happening in the artificial diamond market, may tell us...
a year ago
The history of aluminum, and what is now happening in the artificial diamond market, may tell us something about a post-scarcity world. Aluminum is the most abundant metal in the Earth’s crust. However, it like to form with other elements and therefore it was very difficulty to...
Math Is Still...
The AI Tools Making Images Look Better
Researchers have discovered ways around a fundamental trade-off between accuracy and beauty in...
a year ago
Researchers have discovered ways around a fundamental trade-off between accuracy and beauty in digital images.
The post The AI Tools Making Images Look Better first appeared on Quanta Magazine
Probably...
The Center Moves Faster Than You
In May 2022, Elon Musk tweeted this cartoon: The creator of the cartoon, Colin Wright, explained it...
11 months ago
In May 2022, Elon Musk tweeted this cartoon: The creator of the cartoon, Colin Wright, explained it like this: At the outset, I stand happily beside ‘my fellow liberal,’ who is slightly to my left. In 2012 he sprints to the left, dragging out the left end of the political...
Asterisk
What We Owe The Future
William MacAskill’s latest book presents itself as an introduction to the burgeoning longtermist...
over a year ago
William MacAskill’s latest book presents itself as an introduction to the burgeoning longtermist movement. But his views are eccentric – even within the movement he founded.
NeuroLogica Blog
Some Future Tech Possibilities
It’s difficult to pick winners and losers in the future tech game. In reality you just have to see...
10 months ago
It’s difficult to pick winners and losers in the future tech game. In reality you just have to see what happens when you try out a new technology in the real world with actual people. Many technologies that look good on paper run into logistical problems, difficulty scaling, fall...
Inverted Passion
A primer on dopamine
1/ I recently made notes on the book “Hooked” but wasn’t satisfied by the depth of explanation in...
11 months ago
1/ I recently made notes on the book “Hooked” but wasn’t satisfied by the depth of explanation in it. 2/ I wanted to get down into neuroscience of habit-forming products and that inevitably lead me to the (in)famous neurotransmitter dopamine. 3/ Before we dive into what dopamine...
NeuroLogica Blog
Building A Robotic Hand
Roboticists are often engaged in a process of reinventing the wheel – duplicating the function of...
a year ago
Roboticists are often engaged in a process of reinventing the wheel – duplicating the function of biological bodies in rubber, metal, and plastic. This is a difficult task because biological organisms are often wondrous machines. The human hand, in particular, is a feat of...
Asterisk
Mysticism & Empiricism
The best way to predict if you’ll benefit from psychedelic therapy is a questionnaire asking if...
a year ago
The best way to predict if you’ll benefit from psychedelic therapy is a questionnaire asking if you’ve met God. Where did it come from, and what is it really measuring?
Out-of-Pocket Blog
OOP Slack final reminder | Out-Of-Pocket
it's the final countdownnnnn
9 months ago
it's the final countdownnnnn
Math Is Still...
Swirling Forces, Crushing Pressures Measured in the Proton
Long-anticipated experiments that use light to mimic gravity are revealing the distribution of...
9 months ago
Long-anticipated experiments that use light to mimic gravity are revealing the distribution of energies, forces and pressures inside a subatomic particle for the first time.
The post Swirling Forces, Crushing Pressures Measured in the Proton first appeared on Quanta...
NeuroLogica Blog
For Movies – Animals Don’t Sound Real Enough
What does a majestic eagle sound like, or the hoot of a spider monkey, or the roar of a bear? Unless...
a year ago
What does a majestic eagle sound like, or the hoot of a spider monkey, or the roar of a bear? Unless you have an interest in movie tropes, or listen regularly to the SGU, you may have a complete misconception about the sounds these and many other animals make. Eagles, for...
nanoscale views
Interesting reading - resonators, quantum geometry w/ phonons, and fractional quantum anomalous Hall
Real life continues to be busy, but I wanted to point out three recent articles that I found...
6 months ago
Real life continues to be busy, but I wanted to point out three recent articles that I found interesting:
Mechanical resonators are a topic with a long history, going back to the first bells and the tuning fork. I've written about micromachined resonators before, and the quest...
Math Is Still...
How a NASA Probe Solved a Scorching Solar Mystery
The outer layers of the sun’s atmosphere are a blistering million degrees hotter than its surface....
7 months ago
The outer layers of the sun’s atmosphere are a blistering million degrees hotter than its surface. The hidden culprit? Magnetic activity.
The post How a NASA Probe Solved a Scorching Solar Mystery first appeared on Quanta Magazine
Out-of-Pocket Blog
Special Edition - WoW | Out-Of-Pocket
World Of Warcraft vs. COVID-19
a year ago
World Of Warcraft vs. COVID-19
The Works in...
Issue 10: One word—plastics.
Plus: France's baby bust, why we empathise with animals, building infrastructure faster, and more.
a year ago
Plus: France's baby bust, why we empathise with animals, building infrastructure faster, and more.
NeuroLogica Blog
The Potential of AI + CRISPR
In my book, which I will now shamelessly promote – The Skeptics’ Guide to the Future – my coauthors...
3 months ago
In my book, which I will now shamelessly promote – The Skeptics’ Guide to the Future – my coauthors and I discuss the incredible potential of information-based technologies. As we increasingly transition to digital technology, we can leverage the increasing power of computer...
The Roots of...
What I’ve been reading, November 2023
A ~monthly feature. Recent blog posts and news stories are generally omitted; you can find them in...
a year ago
A ~monthly feature. Recent blog posts and news stories are generally omitted; you can find them in my links digests. All emphasis in bold in the quotes below was added by me.
Books
Finished Lynn White, Medieval Technology and Social Change (1962). Last time I talked about the...
Math Is Still...
Pierre de Fermat’s Link to a High School Student’s Prime Math Proof
How Fermat’s less famous ‘little theorem’ got mathematicians young and old to play with prime-like...
a year ago
How Fermat’s less famous ‘little theorem’ got mathematicians young and old to play with prime-like Carmichael numbers.
The post Pierre de Fermat’s Link to a High School Student’s Prime Math Proof first appeared on Quanta Magazine
Math Is Still...
Why the Brain’s Connections to the Body Are Crisscrossed
In all bilaterally symmetrical animals, from humans down to simple worms, nerves cross from one side...
a year ago
In all bilaterally symmetrical animals, from humans down to simple worms, nerves cross from one side of the body to the opposite side of the brain. Geometry may explain why.
The post Why the Brain’s Connections to the Body Are Crisscrossed first appeared on Quanta...
ToughSF
Piracy in Space is Possible Part I: Dastardly DeltaV and Stealth Steamers
Space Piracy is a common science fiction trope. It has been continuously derided in Hard Science...
over a year ago
Space Piracy is a common science fiction trope. It has been continuously derided in Hard Science Fiction as silly and a holdover of the 'Space is an Ocean' analogy.
But is it really that unrealistic to have space pirates? Let's find out.
What is piracy?
A chinese Junk, by...
Andrew Fraknoi –...
Injecting Caution Into Media Reports of Northern Lights as far South as California
Friday, May 10, there was a lot of discussion on the news, on social media, and on different web...
7 months ago
Friday, May 10, there was a lot of discussion on the news, on social media, and on different web sites about storms on the Sun that are unleashing great outbursts of radiation and particles, some of them toward Earth. The fact that we are seeing such “space weather” now certainly...
Blog - Practical...
Engineering The Largest Nuclear Fusion Reactor
[Note that this article is a transcript of the video embedded above.]
This is my friend Jade,...
a year ago
[Note that this article is a transcript of the video embedded above.]
This is my friend Jade, creator of the Up and Atom channel. She makes these incredible math and physics explainers that I absolutely love, and she recently got the opportunity to visit ITER (eater) in France....
The Works in...
Youtube Rules
A new section from Stewart Brand's Maintenance on Books in Progress
a year ago
A new section from Stewart Brand's Maintenance on Books in Progress
Light from Space
Lagoon and the Hourglass
A view of the center region of the Lagoon Nebula (Messier 8, Sharpless 25). There's several other...
over a year ago
A view of the center region of the Lagoon Nebula (Messier 8, Sharpless 25). There's several other objects visible, notably the Hourglass Nebula and open star cluster NGC 6530, as well as numerous Bok globules (the small dark clouds, that will one day form new stars).
Click...
NeuroLogica Blog
Are Electric Vehicles Worth It
One of the key components of the plan to get our civilization to net zero by 2050 is to transform...
a year ago
One of the key components of the plan to get our civilization to net zero by 2050 is to transform the motor vehicle fleet into all electric vehicles (EVs). This is a worthy goal, as it would eliminate burning gasoline for transportation. In fact it’s necessary if we want to get...
NeuroLogica Blog
Hunter-Gatherers and Childcare
What is “natural” for humans? It’s often hard to say, and in my opinion this is a highly overused...
a year ago
What is “natural” for humans? It’s often hard to say, and in my opinion this is a highly overused concept. Primarily this is because humans are adaptable – we adapt to our environment, our situation, and our culture. So it is “natural” for us not to have a natural state. But this...
Math Is Still...
A Quantum Trick Implied Eternal Stability. Now the Idea May Be Falling Apart.
A series of advances seemed to promise the impossible: the existence of quantum states that would...
10 months ago
A series of advances seemed to promise the impossible: the existence of quantum states that would never, ever fall into disarray. But physicists are now discovering that the pull of disorder may not be so easily overcome.
The post A Quantum Trick Implied Eternal...
Out-of-Pocket Blog
How To (Properly) Text Patients | Out-Of-Pocket
Do’s and don’ts + tactical tips from an actual doctor
8 months ago
Do’s and don’ts + tactical tips from an actual doctor
NeuroLogica Blog
A Climate Debate Regarding Health Effects – Part IV
Part 4 This will be the final installment of this mini-debate about climate change and health...
a year ago
Part 4 This will be the final installment of this mini-debate about climate change and health effects, following a typical format of each person getting to make a statement and a response. Scott makes a lot of complaints about tone, format and fairness while simultaneously trying...
Explorations of an...
Borneo: Quest For The Bulwer's Pheasant
The Bulwer's Pheasant was one of the first birds to grab hold of my attention when I first flipped...
3 weeks ago
The Bulwer's Pheasant was one of the first birds to grab hold of my attention when I first flipped through the pages of my Borneo field guide many years ago. This pheasant of Bornean hill forest is nearly unbelievable-looking (the male, that is). He has a deep maroon chest and a...
symmetry magazine
LHC experiments see four top quarks
The ATLAS and CMS experiments have observed a process 4,000 times rarer than the production of Higgs...
a year ago
The ATLAS and CMS experiments have observed a process 4,000 times rarer than the production of Higgs bosons.
The ATLAS and CMS experiments have successfully detected the production of a quartet of top quarks during high-energy proton collisions inside the Large...
Out-of-Pocket Blog
The Curious Case of Professional Employer Organizations | Out-Of-Pocket
A tale about complexity, risk skimming, and what counts as an “employee” or “company”
3 months ago
A tale about complexity, risk skimming, and what counts as an “employee” or “company”
NeuroLogica Blog
Using Cement for Energy Storage
Imagine if every house, every building, came with 1-2 days (or possibly more) of energy storage....
a year ago
Imagine if every house, every building, came with 1-2 days (or possibly more) of energy storage. What if every wind turbine could store a day’s worth of the energy it produces on average? How beneficial would it be if the most common building material the world could be used to...
The Roots of...
What if they gave an Industrial Revolution and nobody came?
Imagine you could go back in time to the ancient world to jump-start the Industrial Revolution. You...
a year ago
Imagine you could go back in time to the ancient world to jump-start the Industrial Revolution. You carry with you plans for a steam engine, and you present them to the emperor, explaining how the machine could be used to drain water out of mines, pump bellows for blast furnaces,...
NeuroLogica Blog
Regret After Transitioning
In my last post I noted that even mentioning general vague support for the LGBTQ community was...
a year ago
In my last post I noted that even mentioning general vague support for the LGBTQ community was enough to trigger very specific feedback, often making erroneous scientific claims. Each claim requires a deep dive and article-length discussion. Even though the discussion that...
IEEE Spectrum
Edith Clarke: Architect of Modern Power Distribution
Edith Clarke was a powerhouse in practically every sense of the word. From the start of her career...
5 months ago
Edith Clarke was a powerhouse in practically every sense of the word. From the start of her career at General Electric in 1922, she was determined to develop stable, more reliable power grids.
During her first years at GE she invented what came to be known as the Clarke...
Blog - Practical...
The Only State Capital Where You Can’t Drink the Water
[Note that this article is a transcript of the video embedded above.]
As a blast of bitter Arctic...
a year ago
[Note that this article is a transcript of the video embedded above.]
As a blast of bitter Arctic air poured into North America around Christmas Time in December 2022, weather conditions impacted nearly every aspect of life, from travel to electricity to just trying to get out...
Out-of-Pocket Blog
Secret Research Techniques | Out-Of-Pocket
A magician always reveals his tricks for the purposes of engagement
a year ago
A magician always reveals his tricks for the purposes of engagement
nanoscale views
Rice University Academy of Fellows postdoc opportunity, 2023
As I have posted in previous years, Rice has a university-wide endowed honorific postdoctoral...
over a year ago
As I have posted in previous years, Rice has a university-wide endowed honorific postdoctoral program called the Rice Academy of Fellows. Like all such things, it's very competitive. The new application listing has gone live here with a deadline of January 4, 2023. ...
Blog - Practical...
How Different Spillway Gates Work
[Note that this article is a transcript of the video embedded above.]
In the heart of Minneapolis,...
a year ago
[Note that this article is a transcript of the video embedded above.]
In the heart of Minneapolis, Minnesota on the Mississippi River is the picturesque Upper Saint Anthony Falls Lock and Dam, which originally made it possible to travel upstream on the river past the falls...
nanoscale views
Materials labs of the future + cost
The NSF Division of Materials Research has been soliciting input from the community about both the...
over a year ago
The NSF Division of Materials Research has been soliciting input from the community about both the biggest outstanding problems in condensed matter and materials science, and the future of materials labs - what kind of infrastructure, training, etc. will be needed to address...
Math Is Still...
A Multitalented Scientist Seeks the Origins of Multicellularity
The pathbreaking geneticist Cassandra Extavour pursues the secrets of multicellular life while...
10 months ago
The pathbreaking geneticist Cassandra Extavour pursues the secrets of multicellular life while balancing careers in both science and singing.
The post A Multitalented Scientist Seeks the Origins of Multicellularity first appeared on Quanta Magazine
Wanderingspace
China's Zhurong Mars Rover
How adorable is this. The Zhurong rover placed a camera on the ground, backed up and took a selfie...
over a year ago
How adorable is this. The Zhurong rover placed a camera on the ground, backed up and took a selfie next to the landing platform it emerged from last month.
Many Worlds
After Seven Years Away Exploring an Asteroid, OSIRIS-REx is Landing Soon with Precious Samples
Bits of pebbles and dust from the asteriod Bennu that were collected during the long journey of the...
a year ago
Bits of pebbles and dust from the asteriod Bennu that were collected during the long journey of the OSIRIS-REx spacecraft should be landing in the Utah desert later this month. The delivery will be a first for NASA — its first sample return from an asteroid and one of a very...
Math Is Still...
How the Brain Protects Itself From Blood-Borne Threats
To buffer the brain against menaces in the blood, a dynamic, multi-tiered system of protection is...
a year ago
To buffer the brain against menaces in the blood, a dynamic, multi-tiered system of protection is built into the brain’s blood vessels.
The post How the Brain Protects Itself From Blood-Borne Threats first appeared on Quanta Magazine
Wanderingspace
Morning and Night on Mars
Yeah. Um… Wow. Nice Job NASA. I’ll just copy/paste how The Planetary Society explained it:
“NASA's...
over a year ago
Yeah. Um… Wow. Nice Job NASA. I’ll just copy/paste how The Planetary Society explained it:
“NASA's Curiosity team made this artistic interpretation of the rover's view from high up Mt. Sharp by combining pictures taken at different times of day and adding colors to bring out the...
Explorations of an...
Borneo 2024: Introduction And Pre-Tour Birding
About a month ago, I returned to Sabah in east Malaysia for my fourth tour of duty as a guide for...
a month ago
About a month ago, I returned to Sabah in east Malaysia for my fourth tour of duty as a guide for Quest Nature Tours. I've always said that Borneo is one of my favourite tours that I run and even after three previous trips I was looking forward to returning. One of the main...
Inverted Passion
What bootstraps intelligence?
A musing on how intelligence comes to be. The bedrock of intelligence is abstractions – the thing we...
3 months ago
A musing on how intelligence comes to be. The bedrock of intelligence is abstractions – the thing we do when we throw away a lot of information and just emphasise on a subset of it (e.g. calling that thing an apple instead of describing all its atoms and their x, y, z positions)....
Light from Space
The Helping Hand of LDN 1355
LDN 1355 is a dark nebula in Cassiopeia, vaguely in the shape of an outstreched human hand—the dark...
over a year ago
LDN 1355 is a dark nebula in Cassiopeia, vaguely in the shape of an outstreched human hand—the dark dust obscuring the reflection nebula behind it.
Total exposure time: 58h 50' (211,800s)
Image resolution: 5,216 × 3,909px (1.924″/px)
Shot from my driveway
Light from Space
Vaporwave Crescent
Shooting space with a monochrome camera means using various filters—when choosing narrowband filters...
over a year ago
Shooting space with a monochrome camera means using various filters—when choosing narrowband filters (those with only a few nanometers of bandpass) one can limit the sensor capturing only very specific wavelengths of light, namely the emissions of certain gasses (basically,...
Math Is Still...
How Pools of Genetic Diversity Affect a Species’ Fate
A new, deeper understanding of how the breeding structure of species affects their genetic diversity...
a year ago
A new, deeper understanding of how the breeding structure of species affects their genetic diversity is giving conservationists better tools for saving animals.
The post How Pools of Genetic Diversity Affect a Species’ Fate first appeared on Quanta Magazine
The Works in...
Two Assault Rifles
A new section from Stewart Brand's Maintenance on Books in Progress
a year ago
A new section from Stewart Brand's Maintenance on Books in Progress
NeuroLogica Blog
Pentagon Report – No UFOs
In response to a recent surge in interest in alien phenomena and claims that the US government is...
9 months ago
In response to a recent surge in interest in alien phenomena and claims that the US government is hiding what it knows about extraterrestrials, the Pentagon established a committee to investigate the question – the All-Domain Anomaly Resolution Office (AARO). They have recently...
NeuroLogica Blog
Will Hydrogen BEV Hybrids Be A Thing?
I recently recorded a YouTube video on the notion of hydrogen fuel cell cars (it will be posted...
a year ago
I recently recorded a YouTube video on the notion of hydrogen fuel cell cars (it will be posted soon, and I will add the link when it’s up). One question I did not get into in the video, but which is an interesting thought experiment, is hydrogen – plug-in battery hybrid...
Explorations of an...
A Quest Nature Tours Adventure To Sulawesi
The island of Sulawesi must be on the bucket list for any naturalist with a strong interest in...
a year ago
The island of Sulawesi must be on the bucket list for any naturalist with a strong interest in biogeography. Though Borneo is situated only a few hundred kilometers to the west, and the Moluccas are not far to the east, the species composition of Sulawesi is significantly...
Out-of-Pocket Blog
More thoughts consumerization in healthcare | Out-Of-Pocket
tales from other countries, industries, and more
3 months ago
tales from other countries, industries, and more
nanoscale views
Really doing mechanics at the quantum level
A helpful ad from Science Made Stupid.
Since before the development of micro- and...
a month ago
A helpful ad from Science Made Stupid.
Since before the development of micro- and nanoelectromechanical techniques, there has been an interest in making actual mechanical widgets that show quantum behavior. There is no reason that we should not be able to make a mechanical...
NeuroLogica Blog
Odysseus Lands on the Moon
December 11, 1972, Apollo 17 soft landed on the lunar surface, carrying astronauts Gene Cernan and...
10 months ago
December 11, 1972, Apollo 17 soft landed on the lunar surface, carrying astronauts Gene Cernan and Harrison Schmitt. This was the last time anything American soft landed on the moon, over 50 years ago. It seems amazing that it’s been that long. On February 22, 2024, the Odysseus...
IEEE Spectrum
The Lisa Was Apple’s Best Failure
Happy 40th Birthday to Lisa! The Apple Lisa computer, that is. In celebration of this milestone, the...
a year ago
Happy 40th Birthday to Lisa! The Apple Lisa computer, that is. In celebration of this milestone, the Computer History Museum has received permission from Apple to release the source code to the Lisa, including its system and applications software.
You can access the Lisa source...
NeuroLogica Blog
Cities on Fire
Most major cities in the US experienced a major fire sometime between 1860 and 1920. Actually these...
5 months ago
Most major cities in the US experienced a major fire sometime between 1860 and 1920. Actually these fires, called conflagrations, have been occurring since colonial times and into the middle of the 20th century, but saw a peak in the late 19th and early 20th century. Many cities...
Casey Handmer's blog
Powering the Mars base
This post is part of the series on space topics. This post is not the last word on this topic. The...
a month ago
This post is part of the series on space topics. This post is not the last word on this topic. The usual caveats apply. I’m curious if you have strong opinions on different fuel mixes. A growing Mars base has a prodigious need for power. I’ve previously written two posts on...
NeuroLogica Blog
Unifying Cognitive Biases
Are you familiar with the “lumper vs splitter” debate? This refers to any situation in which there...
a year ago
Are you familiar with the “lumper vs splitter” debate? This refers to any situation in which there is some controversy over exactly how to categorize complex phenomena, specifically whether or not to favor the fewest categories based on similarities, or the greatest number of...
Drew Ex Machina
Rockets Falling from Orbit: The Saturn V That Launched NASA’s Skylab
In recent years, the uncontrolled reentries of the spent 22-metric ton core stages of China’s new...
over a year ago
In recent years, the uncontrolled reentries of the spent 22-metric ton core stages of China’s new Long March 5B heavy lift launch vehicle, used to orbit […]
NeuroLogica Blog
Decarbonizing Aviation and Agriculture
When we talk about reducing carbon release in order to slow down and hopefully stop anthropogenic...
2 months ago
When we talk about reducing carbon release in order to slow down and hopefully stop anthropogenic global warming much of the focus is on the energy and transportation sectors. There is a good reason for this – the energy sector is responsible for 25% of greenhouse gas (GHG)...
Light from Space
Sharpless 119
Sharpless 119 (Sh2-119), sometimes referred to as “The Clamshell Nebula” is an emission nebula in...
over a year ago
Sharpless 119 (Sh2-119), sometimes referred to as “The Clamshell Nebula” is an emission nebula in Cygnus. It's rarely photographed as there's other, brighter nebulæ nearby, such as the North America Nebula.
Click or tap to enlarge/double-tap to zoom
Total exposure time: 23h
Explorations of an...
Chaco Birding, And A Rare Monjita
The Gran Chaco (or simply, "Chaco"), is a sparsely populated plain in central South America, known...
a year ago
The Gran Chaco (or simply, "Chaco"), is a sparsely populated plain in central South America, known for its hot, semi-arid environment. It doesn't refer to one particular ecosystem, but rather, it includes a number of different types of forest, scrub, savannah and grassland. Most...
Math Is Still...
Secret Messages Can Hide in AI-Generated Media
In steganography, an ordinary message masks the presence of a secret communication. Humans can never...
a year ago
In steganography, an ordinary message masks the presence of a secret communication. Humans can never do it perfectly, but a new study shows it’s possible for machines.
The post Secret Messages Can Hide in AI-Generated Media first appeared on Quanta Magazine
Stephen Wolfram...
Can AI Solve Science?
Note: Click any diagram to get Wolfram Language code to reproduce it. Wolfram Language code for...
9 months ago
Note: Click any diagram to get Wolfram Language code to reproduce it. Wolfram Language code for training the neural nets used here is also available (requires GPU). Won’t AI Eventually Be Able to Do Everything? Particularly given its recent surprise successes, there’s a somewhat...
nanoscale views
Guide to faculty searches, 2024 edition
As you can tell from my posting frequency lately, I have been unusually busy. I hope to be writing...
2 months ago
As you can tell from my posting frequency lately, I have been unusually busy. I hope to be writing about more condensed matter and nano science soon. In the meantime, I realized that I have not re-posted or updated my primer on how tenure-track faculty searches work in physics...
nanoscale views
What is a Wigner crystal?
Last week I was at the every-2-years Gordon Research Conference on Correlated Electron Systems at...
5 months ago
Last week I was at the every-2-years Gordon Research Conference on Correlated Electron Systems at lovely Mt. Holyoke. It was very fun, but one key aspect of the culture of the GRCs is that attendees are not supposed to post about them on social media, thus encouraging presenters...
nanoscale views
Items of interest
The start of the semester has been very busy, but here are some items that seem interesting:
As...
3 months ago
The start of the semester has been very busy, but here are some items that seem interesting:
As many know, there has been a lot of controversy in recent years about high pressure measurements of superconductivity. Here is a first-hand take by one of the people who helped bring...
The Roots of...
Why no Roman Industrial Revolution?
Why didn’t the Roman Empire have an industrial revolution?
Bret Devereaux has an essay addressing...
a year ago
Why didn’t the Roman Empire have an industrial revolution?
Bret Devereaux has an essay addressing that question, which multiple people have pointed me to at various times. In brief, Devereaux says that Britain industrialized through a very specific path, involving coal mines,...
The Roots of...
The Commission for Stopping Further Improvements
On May 24, 1847, a bridge over the Dee River in Chester, England, collapsed. A passenger train...
a year ago
On May 24, 1847, a bridge over the Dee River in Chester, England, collapsed. A passenger train plunged into the river; five people were killed and nine seriously injured.
The subsequent investigation blamed the bridge’s cast iron girders. Cast iron, like concrete but unlike...
Chris Grossack's...
Life in Johnstone's Topological Topos 1 -- Fundamentals
I’ve been thinking a lot about the internal logic of topoi again, and I
want to have more examples...
5 months ago
I’ve been thinking a lot about the internal logic of topoi again, and I
want to have more examples of topoi that I understand well enough to
externalize some statements. There’s more to life than just a localic
$\mathsf{Sh}(B)$, and since I’m starting to feel like I understand...
NeuroLogica Blog
Is the AI Singularity Coming?
Like it or not, we are living in the age of artificial intelligence (AI). Recent advances in large...
9 months ago
Like it or not, we are living in the age of artificial intelligence (AI). Recent advances in large language models, like ChatGPT, have helped put advanced AI in the hands of the average person, who now has a much better sense of how powerful these AI applications can be (and...
Quantum Frontiers
My experimental adventures in quantum thermodynamics
Imagine a billiard ball bouncing around on a pool table. High-school level physics enables us to...
9 months ago
Imagine a billiard ball bouncing around on a pool table. High-school level physics enables us to predict its motion until the end of time using simple equations for energy and momentum conservation, as long as you know the initial conditions … Continue reading →
Math Is Still...
Does Nothingness Exist?
Even empty space bubbles with energy, according to quantum mechanics — and that fact affects almost...
a year ago
Even empty space bubbles with energy, according to quantum mechanics — and that fact affects almost every facet of physical reality. The theoretical physicist Isabel Garcia Garcia explains to Steven Strogatz why it’s so important in modern physics to understand what a true vacuum...
Math Is Still...
The Year in Math
Landmark results in geometry and number theory marked an exciting year for mathematics, at a time...
6 days ago
Landmark results in geometry and number theory marked an exciting year for mathematics, at a time when advances in artificial intelligence are starting to transform the subject’s future.
The post The Year in Math first appeared on Quanta Magazine
brr
Redeployment Part Three
Off-continent after 446 days!
11 months ago
Off-continent after 446 days!
NeuroLogica Blog
Marmosets Call Each Other By Name
Humans identify and call each other by specific names. So far this advanced cognitive behavior has...
3 months ago
Humans identify and call each other by specific names. So far this advanced cognitive behavior has only been identified in a few other species, dolphins, elephants, and some parrots. Interestingly, it has never been documented in our closest relatives, non-human primates – that...
nanoscale views
Brief items - light-driven diamagnetism, nuclear recoil, spin transport in VO2
Real life continues to make itself felt in various ways this summer (and that's not even an allusion...
5 months ago
Real life continues to make itself felt in various ways this summer (and that's not even an allusion to political madness), but here are three papers (two from others and a self-indulgent plug for our work) you might find interesting.
There has been a lot of work in recent...
NeuroLogica Blog
Fossil Fuels – Reduce Demand or Supply?
This is a bit of a false choice – we can do both, or neither – but it is an important question and a...
a year ago
This is a bit of a false choice – we can do both, or neither – but it is an important question and a somewhat of a dilemma. Is the optimal path to reductions and eventual elimination of fossil fuel burning through reduced demand or supply? There are some interesting tradeoffs...
nanoscale views
Tour de force work: Bragg, diffraction, and diamond
There are some examples of scientific progress that just seem so far above and beyond the norm, it's...
a year ago
There are some examples of scientific progress that just seem so far above and beyond the norm, it's almost jaw dropping in terms of the mental leap needed for the insight. One example that I always liked to point out to first-year undergrads learning about gravity is Johannes...
NeuroLogica Blog
A Galaxy Without Dark Matter
Dark matter is one of the greatest current scientific mysteries. It’s a fascinating story playing...
a year ago
Dark matter is one of the greatest current scientific mysteries. It’s a fascinating story playing out in real time, although over years, so you have to be patient. Future generations might be able to binge the dark matter show, but not us. We have to wait for each episode to...
Math Is Still...
The Researcher Who Explores Computation by Conjuring New Worlds
Russell Impagliazzo studies hard problems, the limits of cryptography, the nature of randomness and...
9 months ago
Russell Impagliazzo studies hard problems, the limits of cryptography, the nature of randomness and more.
The post The Researcher Who Explores Computation by Conjuring New Worlds first appeared on Quanta Magazine
Probably...
Where’s My Train?
Yesterday I presented a webinar for PyMC Labs where I solved one of the exercises from Think Bayes,...
5 months ago
Yesterday I presented a webinar for PyMC Labs where I solved one of the exercises from Think Bayes, called “The Red Line Problem”. Here’s the scenario: The Red Line is a subway that connects Cambridge and Boston, Massachusetts. When I was working in Cambridge I took the Red Line...
Uncharted...
The Latest on Healthcare Research
Cancer research, AI in healthcare, aging research, and much more
a month ago
Cancer research, AI in healthcare, aging research, and much more
nanoscale views
Nanopasta, no, really
Fig. 1 from the linked paper
Here is a light-hearted bit of research that touches on some fun...
4 weeks ago
Fig. 1 from the linked paper
Here is a light-hearted bit of research that touches on some fun physics. As you might readily imagine, there is a good deal of interdisciplinary and industrial interest in wanting to create fine fibers out of solution-based materials. One...
Asterisk
Read This, Not That: The Hidden Cost of Nutrition Misinformation
Our daily lives are inundated with misleading claims about nutrition. That’s not just distracting —...
a year ago
Our daily lives are inundated with misleading claims about nutrition. That’s not just distracting — it’s also harming our health.
Articles - Chris...
Moved to tears
20 years ago, on January 15 2004, a little before 2 AM Pacific time, was
the payoff.
It was...
10 months ago
20 years ago, on January 15 2004, a little before 2 AM Pacific time, was
the payoff.
It was cause for celebration. But first, I wept.
Blog - Practical...
Why Bridges Don't Sink
[Note that this article is a transcript of the video embedded above.]
The essence of a bridge is not...
5 months ago
[Note that this article is a transcript of the video embedded above.]
The essence of a bridge is not just that it goes over something, but that there’s clear space underneath for a river, railway, or road. Maybe this is already obvious to you, but bridges present a unique...
Andrew Fraknoi –...
Good Meteor Shower This Week
Wednesday evening and Thursday morning (Dec. 13-14) is the peak time for one of the best meteor...
a year ago
Wednesday evening and Thursday morning (Dec. 13-14) is the peak time for one of the best meteor showers of the year – the Geminids.
The post Good Meteor Shower This Week appeared first on Andrew Fraknoi - Astronomy Lectures - Astronomy Education Resources.
Probably...
The Political Gender Gap is Not Growing
In a previous article, I used data from the General Social Survey (GSS) to see if there is a growing...
10 months ago
In a previous article, I used data from the General Social Survey (GSS) to see if there is a growing gender gap among young people in political alignment, party affiliation, or political attitudes. So far, the answer is no. Ryan Burge has done a similar analysis with data from...
Light from Space
The Soul of the Heart Nebula
A spectacular emission Nebula, the Heart Nebula is one of the classics of Northern Hemisphere...
over a year ago
A spectacular emission Nebula, the Heart Nebula is one of the classics of Northern Hemisphere amateury astronomy.
In the gallery below, I've highlighted 3 very different areas of the image:
Left: Planetary Nebula WeBo-1
Middle: Melotte 15 in the... heart of the Heart...
NeuroLogica Blog
Washington Post on Past Lives
Generally speaking the mainstream media does a terrible job of reporting anything in the realm of...
7 months ago
Generally speaking the mainstream media does a terrible job of reporting anything in the realm of pseudoscience or the paranormal. The Washington Post’s recent article on children who apparently remember their past lives is no exception. Journalists generally don’t have the...
NeuroLogica Blog
Moon Spacesuit Prototype Unveiled
Good spacesuits are deceptively difficult to design, even with today’s technology. NASA is planning...
a year ago
Good spacesuits are deceptively difficult to design, even with today’s technology. NASA is planning to return to the moon in 2025 (if all goes well) but the spacesuit the astronauts will wear is one piece to the puzzle they have not completed yet (the other being the lunar...
nanoscale views
Some interesting links - useful lecture notes, videos
Proposal writing, paper writing, and course prep are eating a lot of my bandwidth right now, but I...
a year ago
Proposal writing, paper writing, and course prep are eating a lot of my bandwidth right now, but I wanted to share a few things:
David Tong at Cambridge is a gifted educator and communicator who has written lecture notes that span a wide swath of the physics curriculum, from...
Quantum Frontiers
Happy 200th birthday, Carnot’s theorem!
In Kenneth Grahame’s 1908 novel The Wind in the Willows, a Mole meets a Water Rat who lives on a...
3 weeks ago
In Kenneth Grahame’s 1908 novel The Wind in the Willows, a Mole meets a Water Rat who lives on a River. The Rat explains how the River permeates his life: “It’s brother and sister to me, and aunts, and company, … Continue reading →
Out-of-Pocket Blog
Can patients be good healthcare shoppers? | Out-Of-Pocket
Should their be limits to patient agency?
4 months ago
Should their be limits to patient agency?
Math Is Still...
The S-Matrix Is the Oracle Physicists Turn To in Times of Crisis
Particle physicists in search of the next theory of reality are consulting a mathematical structure...
7 months ago
Particle physicists in search of the next theory of reality are consulting a mathematical structure that they know will never fail: a table of possibilities known as the S-matrix.
The post The S-Matrix Is the Oracle Physicists Turn To in Times of Crisis first appeared...
Interaction Magic -...
Modelling my brain
A 22 hour medical experiment breathing 12% oxygen, and the 7000 images of my brain that came out of...
over a year ago
A 22 hour medical experiment breathing 12% oxygen, and the 7000 images of my brain that came out of it.
The Roots of...
What does it mean to “trust science”?
And this, my children, is why we do not say things like “I believe in science”. I mean, don’t get me...
a year ago
And this, my children, is why we do not say things like “I believe in science”. I mean, don’t get me wrong, science definitely exists—I’ve seen it. But not everything that calls itself science is science, and even good science sometimes gets wrong results. –Megan McArdle
Should...
Explorations of an...
A Month In Northern Peru, Part 7: The Marvelous Spatuletail (February 9, 2024)
There are several bird species that are near the top of the wish-list for any birdwatcher visiting...
8 months ago
There are several bird species that are near the top of the wish-list for any birdwatcher visiting Peru for the first time. The enigmatic Long-whiskered Owlet is one, as it is a recently described species of owl that is only known from the stunted cloud forests in a very small...
pcloadletter
Write code that you can understand when you get paged at 2am
The older I get, the more I dislike clever code. This is not a controversial take; it is pretty-well...
7 months ago
The older I get, the more I dislike clever code. This is not a controversial take; it is pretty-well agreed upon that clever code is bad.
But I particularly like the on-call responsiblity framing: write code that you can understand when you get paged at 2am.
If you have never...
nanoscale views
Foams! (or, why my split pea side dish boils over every Thanksgiving)
Foams can be great examples of mechanical metamaterials.
Adapted from TOC figure of this...
3 weeks ago
Foams can be great examples of mechanical metamaterials.
Adapted from TOC figure of this paper
Consider my shaving cream. You might imagine that the (mostly water) material would just pool as a homogeneous liquid, since water molecules have a strong attraction for one...
ToughSF
Nuclear Reactor Lasers: from Fission to Photon
Nuclear reactor lasers are devices that can generate lasers from nuclear energy with little to no...
over a year ago
Nuclear reactor lasers are devices that can generate lasers from nuclear energy with little to no intermediate conversion steps.
We work out just how effective they can be, and how they stack up against conventional electrically-powered lasers. You might want to re-think your...
Asterisk
Why Isn’t the Whole World Rich?
The question of why some countries join the developed world while others remain in poverty has vexed...
over a year ago
The question of why some countries join the developed world while others remain in poverty has vexed economists for decades. What makes it so hard to answer?
NeuroLogica Blog
Eating Methane
Methane is the forgotten greenhouse gas (sort of). Often, when discussing how best to reduce...
a year ago
Methane is the forgotten greenhouse gas (sort of). Often, when discussing how best to reduce anthropogenic climate change, we talk about decarbonizing our electrical and transport sectors, and carbon removal. But methane is also a greenhouse gas, contributing to global warming,...
ToughSF
The Lofstrom Loop: A Bridge to Space
Imagine you could take a train ride to space. Tracks that slope up into the sky, higher and higher,...
a year ago
Imagine you could take a train ride to space. Tracks that slope up into the sky, higher and higher, until you reach a plateau above the planet where it’s a straight line up to orbital velocity.
That’s what’s possible with a Lofstrom Loop. But sending you into orbit is just one...
Quantum Frontiers
Quantum physics proposes a new way to study biology – and the results could revolutionize our...
By guest blogger Clarice D. Aiello, faculty at UCLA Imagine using your cellphone to control the...
a year ago
By guest blogger Clarice D. Aiello, faculty at UCLA Imagine using your cellphone to control the activity of your own cells to treat injuries and disease. It sounds like something from the imagination of an overly optimistic science fiction writer. … Continue reading →
Out-of-Pocket Blog
Some cool AI healthcare projects | Out-Of-Pocket
What was built at the OOP hackathon?
4 months ago
What was built at the OOP hackathon?
Probably...
The Gender Gap in Political Beliefs Is Small
In previous articles (here, here, and here) I’ve looked at evidence of a gender gap in political...
10 months ago
In previous articles (here, here, and here) I’ve looked at evidence of a gender gap in political alignment (liberal or conservative), party affiliation (Democrat or Republican), and policy preferences. Using data from the GSS, I found that women are more likely to say they are...
Math Is Still...
Geometers Engineer New Tools to Wrangle Spacecraft Orbits
Mathematicians think abstract tools from a field called symplectic geometry might help with planning...
8 months ago
Mathematicians think abstract tools from a field called symplectic geometry might help with planning missions to far-off moons and planets.
The post Geometers Engineer New Tools to Wrangle Spacecraft Orbits first appeared on Quanta Magazine
Math Is Still...
The Year in Computer Science
Researchers got a better look at chatbots’ thoughts, amateurs learned just how complicated simple...
3 days ago
Researchers got a better look at chatbots’ thoughts, amateurs learned just how complicated simple systems can be, and codes became expert self-fixers.
The post The Year in Computer Science first appeared on Quanta Magazine
The Works in...
Notes on Progress: Selective breeding and chicken welfare
We've bred larger and larger chickens. Now can we breed happier ones?
over a year ago
We've bred larger and larger chickens. Now can we breed happier ones?
Interaction Magic -...
3 tips for co-designing with kids
Designing future sports products with a group of 11 year olds.
a year ago
Designing future sports products with a group of 11 year olds.
NeuroLogica Blog
Fossil Fuels – Reduce Demand or Supply?
This is a bit of a false choice – we can do both, or neither – but it is an important question and a...
a year ago
This is a bit of a false choice – we can do both, or neither – but it is an important question and a somewhat of a dilemma. Is the optimal path to reductions and eventual elimination of fossil fuel burning through reduced demand or supply? There are some interesting tradeoffs...
NeuroLogica Blog
An Earth-like Climate is Fragile
One of the biggest questions of exoplanet astronomy is how many potentially habitable planets are...
a year ago
One of the biggest questions of exoplanet astronomy is how many potentially habitable planets are out there in the galaxy. By one estimate the answer is 6 billion Earth-like planets in the Milky Way. But of course we have to set parameters and make estimates, so this number can...
nanoscale views
The 2022 Welch Conference
The last couple of weeks have been very full.
One event was the annual Welch Foundation conference...
over a year ago
The last couple of weeks have been very full.
One event was the annual Welch Foundation conference (program here). The program chair for this one was W. E. Moerner, expert (and Nobel Laureate) on single-molecule spectroscopy, and it was really a great meeting. I'm not just...
Quantum Frontiers
Now published: Building Quantum Computers
Building Quantum Computers: A Practical Introduction by Shayan Majidy, Christopher Wilson, and...
2 months ago
Building Quantum Computers: A Practical Introduction by Shayan Majidy, Christopher Wilson, and Raymond Laflamme has been published by Cambridge University Press and will be released in the US on September 30. The authors invited me to write a Foreword for … Continue reading →
Math Is Still...
Fossilized Molecules Reveal a Lost World of Ancient Life
A new analysis of ancient sediments fills a gap in the fossil record — revealing a massive dynasty...
a year ago
A new analysis of ancient sediments fills a gap in the fossil record — revealing a massive dynasty of ancient eukaryotes, which may have reigned for 800 million years and shaped the history of life of Earth.
The post Fossilized Molecules Reveal a Lost World of Ancient...
nanoscale views
Anyons, simulation, and "real" systems
Quanta magazine this week published an article about two very recent papers, in which different...
a year ago
Quanta magazine this week published an article about two very recent papers, in which different groups performed quantum simulations of anyons, objects that do not follow Bose-Einstein or Fermi-Dirac statistics when they are exchanged. For so-called Abelian anyons (which I wrote...
Marine Madness
Penguin Problems: Are human-induced food shortages driving population declines?
We all love penguins. Clumsy and awkward on land, stealthy and precise underwater- these charismatic...
over a year ago
We all love penguins. Clumsy and awkward on land, stealthy and precise underwater- these charismatic creatures have captured our hearts ever since the release of March of the Penguins. Unfortunately, penguin populations across the globe (especially in South Africa and Antarctica)...
Quantum Frontiers
The Book of Mark
Mark Srednicki doesn’t look like a high priest. He’s a professor of physics at the University of...
a year ago
Mark Srednicki doesn’t look like a high priest. He’s a professor of physics at the University of California, Santa Barbara (UCSB); and you’ll sooner find him in khakis than in sacred vestments. Humor suits his round face better than channeling … Continue reading →
Blog - Practical...
HEAVY CONSTRUCTION of a Sewage Pump Station - Ep 1
Check out our new series! This is the first episode of a five-part pilot series to gauge your...
a year ago
Check out our new series! This is the first episode of a five-part pilot series to gauge your interest in "How It's Made"-esque heavy construction videos. Drop a comment or send me an email to let me know what you think! Watch on YouTube above or ad-free on Nebula here.
Explorations of an...
HWY 101 - Forest Birding Near Iguazú
Highway 101 is the main corridor that runs east-west along the top end of Misiones Province in...
a year ago
Highway 101 is the main corridor that runs east-west along the top end of Misiones Province in Argentina. Though this road looks like a major artery on Google Maps, in practice it is nothing more than a clay track that receives very little traffic - mainly, just a few locals...
Out-of-Pocket Blog
Why don’t healthcare companies say what they do? | Out-Of-Pocket
And some tips to figure out what a company does
a year ago
And some tips to figure out what a company does
Stephen Wolfram...
Ruliology of the “Forgotten” Code 10
My All-Time Favorite Science Discovery June 1, 1984—forty years ago today—is when it would be fair...
6 months ago
My All-Time Favorite Science Discovery June 1, 1984—forty years ago today—is when it would be fair to say I made my all-time favorite science discovery. Like with basically all significant science discoveries (despite the way histories often present them) it didn’t happen without...
Out-of-Pocket Blog
Ciitizen And The Patient Data Marketplace | Out-Of-Pocket
The path to our personal health record
a year ago
The path to our personal health record
Asterisk
Making Sense of Moral Change
A conversation about abolitionism, moral progress, and the pitfalls of historical counterfactuals.
over a year ago
A conversation about abolitionism, moral progress, and the pitfalls of historical counterfactuals.
NeuroLogica Blog
Are Animals Conscious?
This is a great scientific question because it challenges how we ask and answer scientific...
6 months ago
This is a great scientific question because it challenges how we ask and answer scientific questions. Are animals conscious? This is a question discussed in a recent BBC article that peaked my interest. They eventually get to a question that they should have opened with – how do...
NeuroLogica Blog
Should You Get a Heat Pump?
Starting around 1550 and lasting through the 1600s, England had an energy crisis. They were running...
a year ago
Starting around 1550 and lasting through the 1600s, England had an energy crisis. They were running out of wood, which was the main source of fuel for residential and commercial heating. England also needed a lot of wood for their massive navy – it took about 2,000 trees to build...
Math Is Still...
In Highly Connected Networks, There’s Always a Loop
Mathematicians show that graphs of a certain common type must contain a route that visits each point...
6 months ago
Mathematicians show that graphs of a certain common type must contain a route that visits each point exactly once.
The post In Highly Connected Networks, There’s Always a Loop first appeared on Quanta Magazine
Explorations of an...
A Quest Nature Tour Of Jamaica
The Caribbean island of Jamaica is a naturalist’s paradise. Situated south of eastern Cuba, east of...
8 months ago
The Caribbean island of Jamaica is a naturalist’s paradise. Situated south of eastern Cuba, east of Honduras and north of Colombia, Jamaica has an interesting assemblage of species with different origins. Jamaica was never connected to the mainland throughout its long geological...
Out-of-Pocket Blog
Medical Tourism: A Tarpit Idea | Out-Of-Pocket
trust me, you're not the first to look into this
8 months ago
trust me, you're not the first to look into this
symmetry magazine
What the Higgs boson tells us about the universe
The Higgs boson is the only fundamental particle known to be scalar, meaning it has no quantum spin....
a year ago
The Higgs boson is the only fundamental particle known to be scalar, meaning it has no quantum spin. This fact answers questions about our universe, but it also raises new ones.
When it was first discovered in 2012, the Higgs boson captured the popular...
NeuroLogica Blog
Why Do Species Evolve to Get Bigger or Smaller
Have you heard of Cope’s Rule or Foster’s Rule? American paleontologist Edward Drinker Cope first...
11 months ago
Have you heard of Cope’s Rule or Foster’s Rule? American paleontologist Edward Drinker Cope first noticed a trend in the fossil record that certain animal lineages tend to get bigger over evolutionary time. Most famously this was noticed in the horse lineage, beginning with small...
Math Is Still...
Quantum Computers Cross Critical Error Threshold
In a first, researchers have shown that adding more “qubits” to a quantum computer can make it more...
a week ago
In a first, researchers have shown that adding more “qubits” to a quantum computer can make it more resilient. It’s an essential step on the long road to practical applications.
The post Quantum Computers Cross Critical Error Threshold first appeared on Quanta...
Melting Asphalt
Crony Beliefs
[Note: if you prefer audio, you can listen to this essay narrated by Grognor on his excellent...
over a year ago
[Note: if you prefer audio, you can listen to this essay narrated by Grognor on his excellent podcast Second Enumerations. —Ed.] Credits up front: This essay draws heavily from Overcoming Bias, Less Wrong, Slate Star Codex, Robert Kurzban, Robert…
Read more ›
Beautiful Public...
The Pillbox Database
The National Library of Medicine's Pillbox dataset contained 8,693 photographs of pills, with an...
over a year ago
The National Library of Medicine's Pillbox dataset contained 8,693 photographs of pills, with an accompanying database of drug information. It was built to help with the identification of unknown pills.
Math Is Still...
Cellular Self-Destruction May Be Ancient. But Why?
How did cells evolve a process to end their own lives? Recent research suggests that apoptosis, a...
9 months ago
How did cells evolve a process to end their own lives? Recent research suggests that apoptosis, a form of programmed cell death, first arose billions of years ago in bacteria with a primitive sociality.
The post Cellular Self-Destruction May Be Ancient. But Why? first...
Chris Grossack's...
A Quick Application of Model Categories
Almost exactly a year ago (time flies!) I was thinking really hard about
model categories in...
a year ago
Almost exactly a year ago (time flies!) I was thinking really hard about
model categories in preparation for the HoTTEST summer school. I learned
a TON doing this, but I’ve just today seen a really nice (and somewhat concrete)
reason to care about the whole endeavor! I’d love...
Math Is Still...
An Easy-Sounding Problem Yields Numbers Too Big for Our Universe
Researchers prove that navigating certain systems of vectors is among the most complex computational...
a year ago
Researchers prove that navigating certain systems of vectors is among the most complex computational problems.
The post An Easy-Sounding Problem Yields Numbers Too Big for Our Universe first appeared on Quanta Magazine
Out-of-Pocket Blog
Introducing The OOP Talent Collective | Out-Of-Pocket
if you're hiring, this will help you find the best candidates
a year ago
if you're hiring, this will help you find the best candidates
Interaction Magic -...
Interaction20 Round-up
Summary of all the amazing, curious and challenging ideas from last week's IXDA Interaction 20...
over a year ago
Summary of all the amazing, curious and challenging ideas from last week's IXDA Interaction 20 conference.
Explorations of an...
A Month In Northern Peru, Part 2: Chiclayo area (February 3, 2024)
February 2, 2024
Traveling to Chiclayo in northern Peru isn't an easy endeavour. Luckily, we live...
9 months ago
February 2, 2024
Traveling to Chiclayo in northern Peru isn't an easy endeavour. Luckily, we live less than an hour from a major international airport - Pearson Airport in Toronto - but there are few direct flights between Toronto and Lima (and none that were affordable for us...
Probably...
Think Python Goes to Production
Think Python has moved into production, on schedule for the official publication date in July — but...
9 months ago
Think Python has moved into production, on schedule for the official publication date in July — but maybe earlier if things go well. To celebrate, I have posted the next batch of chapters on the new site, up through Chapter 12, which is about Markov text analysis and generation,...
Math Is Still...
The Mystery of the Missing Multicellular Prokaryotes
Why have bacteria never evolved complex multicellularity? A new hypothesis suggests that it could...
7 months ago
Why have bacteria never evolved complex multicellularity? A new hypothesis suggests that it could come down to how prokaryotic genomes respond to a small population size.
The post The Mystery of the Missing Multicellular Prokaryotes first appeared on Quanta...
nanoscale views
APS March Meeting 2024, Day 2
A decent part of today was spent in conversation with friends and colleagues, but here are some high...
9 months ago
A decent part of today was spent in conversation with friends and colleagues, but here are some high points of scientific talks:
The DMP prize session was excellent. The first talk was by Harold Hwang, this year's awardee of the McGroddy Prize. He gave a very compelling...
NeuroLogica Blog
Making Fuel from Sunshine
When it comes to big problems it’s generally a good idea to remember some basic principles. One is...
a year ago
When it comes to big problems it’s generally a good idea to remember some basic principles. One is that there is no free lunch. This is a cliche because it’s true. Another way to put this is – there are no solutions, only trade offs. Sometimes there is a genuine advance that does...
brr
The Beer Can
Connecting old and new.
a year ago
Math Is Still...
When Data Is Missing, Scientists Guess. Then Guess Again.
Across the social and biological sciences, statisticians use a technique that leverages randomness...
2 months ago
Across the social and biological sciences, statisticians use a technique that leverages randomness to deal with the unknown.
The post When Data Is Missing, Scientists Guess. Then Guess Again. first appeared on Quanta Magazine
Math Is Still...
Hyperjumps Math Game
Play Quanta Magazine’s daily interactive math game, Hyperjumps!
The post Hyperjumps Math...
10 months ago
Play Quanta Magazine’s daily interactive math game, Hyperjumps!
The post Hyperjumps Math Game first appeared on Quanta Magazine
Out-of-Pocket Blog
Actually good 2024 healthcare predictions | Out-Of-Pocket
I know, enough predictions. But these are good!
a year ago
I know, enough predictions. But these are good!
Out-of-Pocket Blog
How To Make Your Own Card Game | Out-Of-Pocket
Want to bring a board or card game to life? Here's what you can expect in terms of costs and money...
a year ago
Want to bring a board or card game to life? Here's what you can expect in terms of costs and money you'll make.
Out-of-Pocket Blog
Licensing and Credentialing Nonsense with Assured | Out-Of-Pocket
a month ago
Out-of-Pocket Blog
How much is “too much” when it comes to overpromising as a startup? | Out-Of-Pocket
navigating the gray area
a year ago
Math Is Still...
New Theory Suggests Chatbots Can Understand Text
Far from being “stochastic parrots,” the biggest large language models seem to learn enough skills...
11 months ago
Far from being “stochastic parrots,” the biggest large language models seem to learn enough skills to understand the words they’re processing.
The post New Theory Suggests Chatbots Can Understand Text first appeared on Quanta Magazine
Tikalon Blog by Dev...
Ice Formation
In today's bigger is better world, you don't order a large coffee, you order a 20 fluid ounce Venti...
4 months ago
In today's bigger is better world, you don't order a large coffee, you order a 20 fluid ounce Venti coffee. From 1987 through 2004, McDonald's restaurants had a supersize option for larger than large portions of its French fries and soft drinks. The prefix, super, has been used...
Out-of-Pocket Blog
Cool Ideas For Dentistry + Medicine With Nisarg Patel | Out-Of-Pocket
plus what actually happens in the operating room?
a year ago
plus what actually happens in the operating room?
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