361
There’s no such thing as a tree phylogenetically (2021)
Dendronization – Evolving into a tree-like morphology. (In the style of “carcinization”.) From ‘dendro’, the ancient Greek root for tree.
Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 2,038 posts.
362
Why isn't there a replication crisis in math?
The replication crisis is a major problem in medicine and social science; we know that a huge fraction of the published literature is outright wrong. But in math we don't seem to have a similar crisis, despite reasonably frequent minor errors in published papers. Why not, and what can this tell us about the fields…
363
364
Why we are unlikely to ever leave the solar system.
Fill this in yourself.
365
2021 Williams F1 Computational Fluid Dynamics
Thanks to some clever people I was able to get a CAD model of the current 2021 Williams F1 car — that’s not something that happens every day, so of course I had to run CFD on it. CAD Ge…
366
Delta Variant
Cases are growing exponentially across the world. Again. If you don’t know where this is going, a historical refresher might help. India has suffered about two million COVID deaths, the majority of them during its latest surge caused by Delta.Victims of COVID-19 are cremated in funeral pyres in New Delhi.
367
Why are cancer guidelines stuck in PDFs?
How Machine-Readable Clinical Guidelines Can Help Standardize Cancer Care
368
DNA seen through the eyes of a coder
Updates: 12th of September 2021: I’m writing a book on DNA! If you want to become a beta reader, or have suggestions, I’d love to hear from you! 8th of January 2021: This article has been revised and updated, scientifically and in terms of dead links. Revision made by Tomás Simões (@putadagravidade /…
369
Chasing RFI Waves – Part Seven
Here is part seven (the final part) of my non-fiction work about the National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia. You can also read parts one, two, three, four, five an…
370
Machines are better referees than humans but we’ll be sued if we use them
Andy Howlett and Mark Williamson in our group have been developing fantastic software. It can read the whole scientific literature and analyse it in minute detail. One of the things we are starting with is chemistry. ChemVisitor (part of AMI2) can read chemical structure diagrams and chemical names and work out what…
371
A high-dimensional sphere spilling out of a high-dimensional cube
Make a square, split each side into two halves, producing four cells. Put a circle into each cell such that it fills it completely. There is a small gap right in the middle of the square. Put a circle there again such that it touches the other four circles. The central circle is obviously inside the square, right?…
372
Queueing theory: The science of waiting in line
The math behind how people wait in line
373
L'Affaire Siloxane
How antiperspirant fumes nearly got NASA to evacuate the space station
374
Smoke has caused temperature forecasts to go crazy
This blog provides updated forecasts and comments on current weather or other topics
375
376
A Revolution in Biology?
how developmental biology might contain the secrets to life, intelligence, and immortality
377
On the (Small) Number of Atoms in the Universe
A Go board has 19 × 19 points, each of which can be empty or occupied by black or white, so there are 3 (19 × 19) ≅ 10 172 possible board positions, but "only" about 10 170 of those positions are legal. Here are some of them:
378
379
Batteries: How cheap can they get?
How dirt cheap batteries will completely transform our electricity grid, paving the way for solar and wind and replacing grid reinforcements with grid buffers.
380
Quantum winter is coming
Science News, Physics, Science, Philosophy, Philosophy of Science
381
382
Vitamin D, part 3 – The Evidence
Vitamin D deficiency is linked to cancer, heart disease, respiratory infection, stroke, diabetes, and death. It might seem reasonable that we should all be taking this supplement.
383
False memory implantation in adults is easy
false memory implantation in adults is easy (bonus: here's one way to do it)
384
How well do cars do in crash tests they're not optimized for?
Any time you have a benchmark that gets taken seriously, some people will start gaming the benchmark. Some famous examples in computing are the CPU benchmark specfp and video game benchmarks. With specfp, Sun managed to increase its score on 179.art (a sub-benchmark of specfp) by 12x with a compiler tweak that…
385
386
387
Cells are fast and crowded places (2011)
I recently learned that cells are extremely crowded and busy places. I knew there's a lot of activity in cells, but I didn't realize just h...
388
Look at yourself objectively
In the 1840s, hospitals were dangerous places. Mothers who went in to give birth often didn’t make it out. For example, at Vienna General Hospital’s First Obstetrical Clinic, as many as 10% of mothers died of puerperal fever after giving birth. But there was some good news: at the Second Clinic, the number was just…
389
How to Destroy the Earth (2006)
Preamble Destroying the Earth is harder than you may have been led to believe. You've seen the action movies where the bad guy threatens to destroy the Earth. You've heard people on the news claiming that the next nuclear war or cutting down rainforests or persisting in releasing...
390
“Invisible Electrostatic Wall” at 3M adhesive tape plant (1996)
SESSION 7: SPECIAL SESSION, 17th Annual EOS/ESD Symposium THURSDAY, SEPTEMBER 14, 1995, 8:00 am SESSION 7: SPECIAL SESSION: ELECTROSTATIC CONSIDERATIONS IN INDUSTRY MODERATOR: D. Swenson, 3M 7.7 CASE STUDY - LARGE PLASTIC WEB ELECTROSTATIC PROBLEMS, RESULTS, AND CURE, D. Swenson, 3M Company Tremendous static charge…