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The Australian Border Force won’t stop searching me and my personal devices when I visit Australia. Despite being an Australian citizen, under Australian law, I have zero recourse to this continued flagrant invasion of my privacy. After two years of harassment I am publicizing this as a considered next step in an effort to make it stop. This is somewhat different from my usual articles about space, energy, and technology – we will return to that theme shortly. As far as possible, I will relate only facts and keep editorializing to a minimum. I will update this post as the …
[Originally posted on the Terraform blog April 3, 2025.] Three years ago we set out to make cheap synthetic natural gas from sunlight and air. At the time I didn’t fully appreciate that we had kicked off the process of recompiling the foundation layer of our entire industrial stack. Last year, we made cheap pipeline grade natural gas from sunlight and air and expanded our hydrocarbon fuel road map to include methanol, a versatile liquid fuel and chemical precursor for practically every other kind of oil-derived chemical on the market. Unlimited synthetic methane and methanol underpinning global energy supply is a good start, but …
Some ideas on preventing cryogenic propellant boiloff in Starship during long duration cruise or while operating orbital fuel depots. The usual caveats apply! One of the major concerns with using Starship for the Human Landing System is that propellant (cryogenically liquid methane and oxygen) need to a) be transferred in orbit and b) maintained for the duration of the mission, which could be weeks, months, or years. In particular, no astronaut wants to board their Starship after a successful 6 week sortie on the Moon only to find the fuel’s boiled off and they’re stuck. The trick lies in using energy …
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 …
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 …
More in science
Close to 900 million people across the Global South live in densely packed urban slums, which often sit in floodplains. A new study finds that one in three slum dwellers is at risk of "disastrous" flooding, a risk that is set to grow as warming spurs more intense rainfall around the world. Read more on E360 →
In theory, quantum physics can bypass the hard mathematical problems at the root of modern encryption. A new proof shows how. The post Quantum Scientists Have Built a New Math of Cryptography first appeared on Quanta Magazine
For centuries, the Native people of North America used controlled burns to manage the continent's forests. In an e360 interview, ecologist Loris Daniels talks about the long history of Indigenous burning and why the practice must be restored to protect against catastrophic fires. Read more on E360 →
The beginning of a RET poster session Research Experience for Teachers (RET) programs are an example of the kind of programs that the National Science Foundation funds which are focused on K12 (and broader) education. This summer I hosted a high school physics teacher in my lab for 6 weeks, where he worked on a brief project, with one of my doctoral students helping out in a mentoring role. Just yesterday was the big poster session for all of the participants in the program, and it was very enjoyable to talk with a whole cadre of high school science teachers from across the greater Houston area about their projects and their experiences. Readers may be more familiar with the sibling Research Experience for Undergraduates (REU) programs, which give undergraduate students the chance to work for 10 weeks or so in a lab that is very likely not at their home institution. REUs are a great way for students interested in research to get broad exposure to new topics, meet people and acquire new skills, and for some, figure out whether they like research (and maybe which topics are exciting to them). The educational goal of REUs is clear: providing direct research experience to interested undergrads, ideally while advancing a research project and for some small fraction of students resulting in an eventual publication. RET programs are different: They are intended as professional development. The teachers are exposed to new topics, hopefully a fun research environment, and they are encouraged to think carefully about how they can take the concepts they learn and translate those for the classroom. I am very much not an expert in education research, but there is evidence (see here, for example) that teachers who participate in these programs get a great deal of satisfaction and have lower attrition from teaching professions. (Note that it's hard to do statistics well on questions like that, since the population of teachers that seek out opportunities like this may be a special subset of the total population of teachers.) An idea that makes sense to me: Enhancing the motivation and job satisfaction of a teacher can have a larger cumulative impact on educating students than an individual research project for a single student. It would be a great shame if RET and REU programs are victims of large-scale cuts at NSF. The NSF is the only science agency with education as part of its mission (at least historically). All the more reason to try to persuade appropriators to not follow the draconian presidential budget request for the agency.
