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Spiders and ants inspire metal that won't sink
Rochester researchers have created a metallic structure so water repellent, it refuses to sink—no matter how often it is forced into water.
Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 4,455 posts.
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Study suggests surgery alternative for rotator cuff pain: push-ups, pull-ups
On a Sunday morning in 2006, Cecilia Wu was mugged after leaving church. The pain became unbearable. Discouraged with her treatment options, Wu opted to participate in a pilot study at an orthopedics lab for patients with a full-thickness rotator cuff tear. “It was better than surgery,” Wu said.
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Cylinders in Spheres
What is the largest volume cylinder it is possible to carve from a solid sphere? Also, so you know about the napkin ring problem?
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Psychotherapy via Internet found as good as or better than face-to-face
Das Team Media Relations steht Journalistinnen und Journalisten gerne zur Verfügung. Suchen Sie unsere Expertinnen und Experten direkt, finden Sie Bilder der UZH und Medienberichte oder kontaktieren Sie Ihre Medien-Ansprechpartner.
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My Meeting with David Bohm
June 29, 2023. Some scientists seek to clarify reality, others to mystify it. Physicist David Bohm seemed driven by both impulses. He is renowned for promoting a sensible (according to experts like Einstein, John Bell and philosopher Tim Maudlin) interpretation of quantum mechanics. But Bohm also a
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The Moon Illusion, an Unsolved Mystery
physics, history of science, pseudoscience, hoaxes, writing, education, skepticisism, humor, quotes, illusions, 3d stereo photography.
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Unusual Locomotives
The Douglas Self Site, steam locomotive, Shay, Climax, Mallet, Garratt, Turbomotive, Reid-Ramsey
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Cambridge spin-out starts producing graphene at commercial scale
A recent University of Cambridge spin-out company, Paragraf, has started producing graphene – a sheet of carbon just one atomic layer thick – at up to eight inches (20cm) in diameter, large enough for commercial electronic devices.
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A successful example of "adversarial collaboration"
We synthesized the vast, contradictory scholarly literature on gender bias in academic science from 2000 to 2020. . . . Claims and counterclaims regarding the presence or absence of sexism span a range of evaluation contexts. Our approach relied on a combination of meta-analysis and analytic dissection. We evaluated…
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Bifurcation: The secret giant islands formed when rivers split
As I’m sure you’re aware, rivers usually combine together to make larger and larger rivers until they reach the sea.However, there are some exceptions: rivers do sometimes split up and flow in separate directions. These splits are called “bifurcations” (bi” meaning “two”, and “furcations” being the forks). They happen…
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Project Jupyter Celebrates 20 Years, Fernando Pérez Reflects on How It Started
Twenty years ago, UC Berkeley Associate Statistics Professor Fernando Pérez started one of the foundational tools for analyzing large amounts of data in a transparent and collaborative way. We spoke with Pérez about why he started this project, what challenges he’s faced and what to expect from him and Project Jupyter…
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Sperm Whales blow bubbles to achieve restful, vertical sleep
New research from the University of St Andrews and Université de Neuchâtel, has uncovered the mechanism which allows sperm whales to sleep in a unique vertical position, just under the ocean surface.
3558
Alpha Compositing
Interactive article explaining alpha compositing concepts.
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Elizabeth Cotton’s Fingerstyle Ragtime
Dust-to-digital posted this lovely performance of “Washington Blues” by Elizabeth Cotten. It reminded me that she is the greatest and that I should write more about her. If you are a gu…
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Link found between immune system and hair growth
Founded by polio vaccine developer Jonas Salk, the Salk Institute is an independent, nonprofit organization. We drive foundational, risk-taking research that addresses society’s most pressing challenges, including cancer, Alzheimer’s, and agricultural resilience.
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Stanford researchers develop an engineered 'mini' CRISPR genome editing system
Bioengineers have repurposed a “non-working” CRISPR system to make a smaller version of the genome engineering tool. Its diminutive size should make it easier to deliver into human cells, tissues and the body for gene therapy.
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Color of the Night Sky (2019)
What color is the night sky? Contrary to prevailing views, the moonless night sky is rarely, if ever, black or blue. It is actually much more colorful. In this article, I'll describe some of the colors and the physical reasons for those colors.
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‘Instantly rechargeable’ battery could change the future of electric automobiles
Purdue University is a world-renowned, public research university that advances discoveries in science, technology, engineering and math.
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Breaching a “carbon threshold” could lead to mass extinction
Today’s carbon dioxide emissions may trigger a reflex in the carbon cycle with devastating consequences, according to a new MIT study.
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The Dome: A simple violation of determinism in Newtonian mechanics (2005)
John D. Norton Department of History and Philosophy of Science, University of Pittsburgh Pittsburgh PA 15260. Homepage: www.pitt.edu/~jdnorton This page is available at www.pitt.edu/~jdnorton/goodies
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Learning Is Slower Than You Think
What AI-optimized schools misunderstand about learning
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Why I decided not to enter the $100k global warming time-series challenge
Interesting applied project for your students , or as a warning for decisions under uncertainty / statistical significance. Real money on the line so the length of time and number of entries required to get a winner may be an interesting dataset after this is all done.