Full Width [alt+shift+f] Shortcuts [alt+shift+k]
Sign Up [alt+shift+s] Log In [alt+shift+l]
23
Why is there almost nothing on the left hand side of the USA? Water scarcity! We’re missing 300 million Americans. We’re missing  30 global cities west of 100 degrees longitude. We should do something about it! The western US is a parched opportunity to create millions of acres of prime land for the next billion Americans to live on. Only one ingredient is missing – water. “Cadillac Desert” (1986) by Marc Reisner correctly pointed out that within the limits of natural precipitation, we’ve expanded habitation in the West close to its maximal extent. Nearly 40 years after he wrote, however, …
4 months ago

Improve your reading experience

Logged in users get linked directly to articles resulting in a better reading experience. Please login for free, it takes less than 1 minute.

More from Casey Handmer's blog

California’s path to redemption

California is by far the richest and most powerful polity led by Progressive ideals, and it has taken a beating of late. In this post, I discuss a practical roadmap by which California must reclaim its mantle as the shining city on the hill, an embodiment of the positive attributes of Progressive ideals and material optimism, and once again become a target of aspirational upward mobility. This will not be an easy road. Decades of complacency have squandered enviable resources and potential. But I believe a strength of America is syncretism, with the marketplace of ideas providing robust competition for …

a week ago 10 votes
What can we send to Mars on the first Starships?

As of today, it is 601 days until October 17, 2026, when the mass-optimal launch window to Mars opens next.  While I don’t have any privileged information, it’s fun to speculate about what SpaceX could choose to send on its first Starship flights to Mars. (Spoiler alert: Rods from the gods…) Over the next 600 days, SpaceX has a number of key technologies to demonstrate; orbit, reuse, refill, and chill. It’s hard to make predictions, particularly about the future. I’m optimistic that SpaceX will have multiple fully fueled Starships ready to go in October next year, to be followed by …

2 weeks ago 21 votes
Maximizing electrical power output from a nuclear reactor delivered by Starship to a base on Mars

This post is a follow on from Powering the Mars Base. It’s an extended riff on the following thought experiment: What is the most electrical power you could extract from an integrated Starship-delivered nuclear reactor on Mars? The usual caveats apply. I have taught nuclear physics but I am not a reactor designer – which will shortly become obvious to those of you who Know. No liability is accepted for attempts to install open Brayton cycle nuclear turbines in Starships, with or without SpaceX permission. At the outset, let’s rehearse the underlying assumptions. A Starship has a 9 m diameter, …

3 weeks ago 13 votes
Stuff you should have been taught in college but weren’t

As part of my job running Terraform Industries, I get to build an amazing team of super smart people, and that involves interviewing hundreds of people. Over time certain patterns have become obvious, but I remember when they weren’t obvious to me on the other side of the table! It has become clear to me that there are some subjects that should be covered as part of any professional degree and are not only not taught and not discussed, but most otherwise highly qualified graduates are completely unaware of their existence.  I have previously written about improving resumes, becoming a …

a month ago 29 votes
Moon Escape!

[One from the archives, a previously unpublished short story I wrote c. 2017 on the theme of BASE jumping.] Why anyone thought a prison on the Moon was a good idea was beyond me. Remote, dangerous, inhospitable, to be sure. But certainly not impossible to escape from, as I was about to show. I had been ‘quartered’ in Block D, formerly optical scientist research and habitation module. Half buried in lunar dirt, the squints had wanted light, so Block D had some narrow slit-like windows near the ceiling, unlike the other blocks. From this window I could watch the Earth …

a month ago 30 votes

More in science

The Debate: Should Medical Aid in Death Be Legal? | Out-Of-Pocket

Oh boy, I’m nervous to wade into this conversation

17 hours ago 3 votes
New Conversations, Deep Questions, Bold Ideas in Season Four of ‘The Joy of Why’

Steven Strogatz and Janna Levin return for a new season on major scientific and mathematical questions of our time, with 12 all-new episodes and a new format. The post New Conversations, Deep Questions, Bold Ideas in Season Four of ‘The Joy of Why’ first appeared on Quanta Magazine

13 hours ago 1 votes
Issue 18: Urbanism with Chinese characteristics

Plus: Reducing the motherhood penalty by extending fertility, the steam networks of New York City, and the rise and fall of the Hanseatic league.

14 hours ago 1 votes
Hybrid Bionic Hand

If you think about the human hand as a work of engineering, it is absolutely incredible. The level of fine motor control is extreme. It is responsive and precise. It has robust sensory feedback. It combines both rigid and soft components, so that it is able to grip and lift heavy objects and also cradle […] The post Hybrid Bionic Hand first appeared on NeuroLogica Blog.

16 hours ago 1 votes
How To Get Cheap Ozempic

Or other, more effective GLP-1 drugs

2 days ago 4 votes