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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,455 posts.
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Study finds elevated levels of toxic metals in some juices and soft drinks
A new study has found that some commonly consumed beverages contained levels of toxic metals that exceed federal drinking water standards.
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Project Silica proof-of-concept stores movie on quartz glass
Microsoft and Warner Brothers collaborate to store and retrieve the 1978 'Superman' movie on a piece of glass roughly the size of a drink coaster.
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World-first gigabit laser link between aircraft and geostationary satellite
Faster, more secure connections from space could one day make broadband on planes, ships and even remote roads as easy as turning on a light. The European Space Agency (ESA), Airbus Defence and Space, the Netherlands Organisation for Applied Scientific Research (TNO) and German payload manufacturer TESAT (as…
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Emmanuel Mignot wins Breakthrough Prize for discovering cause of narcolepsy
The Stanford Medicine sleep researcher is honored for discovering the role of orexins in narcolepsy and paving the way to new sleep disorder therapies.
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Laser-generated surface structures create extremely water-repellent metals
Scientists at the Institute of Optics have used lasers to transform metals into extremely water repellent, or super-hydrophobic, materials without the need for temporary coatings.
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Jellyfish can heal wounds in minutes. Scientists want their secrets
A decade ago this summer, at the Marine Biological Laboratory, Jocelyn Malamy watched jellyfish cells “walk” toward each other to close a wound for the first time. An associate professor in Molecular Genetics and Cell Biology at the University of Chicago, Malamy had received transparent, dime-sized medusae of the…
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Listening to satellites for $30
I've ever dreamed of space & satellites, it turms out you can received pictures from them.
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Maxar's Open Satellite Feed
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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Superconductivity without cooling?
Infrared laser pulses modify the structure of the high-temperature superconductor YBCO and make superconductivity possible at room temperature.
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“Beyond the limit”: Satellites and mirrors in space pose threat to the night sky
A new European Southern Observatory (ESO) study has found that current proposals to launch over 1.7 million satellites into orbit, including extremely bright ones, would have “devastating consequences for astronomy.” According to the study, no more than 100 000 faint satellites, below naked eye visibility, should…
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Civilizational Collapse, Part 4
This is part 4 of an intermittent yet always enjoyable series: • Part 1: the rise of the ancient Puebloan civilization in the American Southwest from 10,000 BC to 750 AD. • Part 2: the rise and col…
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Increasing the lifespan of a bulb makes it worse in every other way
This isn't quite right , but it's the type of wrong that cites its sources and hides in the part you'd never think to fact check:
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Study: Inflammation drives social media use
Understanding and identifying when and why people use social media can inform intervention strategies that teach people when to seek connections, social support, or strengthen their offline relationships.
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A lifetime of social ties adds up to healthy aging
Research shows the biological aging process can be slowed by strong social connections and support.
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The 8000th Busy Beaver number eludes ZF set theory (2016)
I’ve supervised a lot of great student projects in my nine years at MIT, but my inner nerdy teenager has never been as personally delighted by a project as it is right now. To…
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How hard do you have to hit a chicken to cook it? (2020)
Some questions are timeless, innocent yet penetrating in their simplicity. Why is the sky blue? Why do things fall? How hard must one hit a chicken to cook it? It is this last mystery of the universe that we discuss today.
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FDA clears blood test to aid evaluation for Alzheimer's disease
The blood-based biomarker test is based on technology developed at WashU Medicine by Randall Bateman, MD, and David Holtzman, MD.
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Why cans of soup are shaped the way they are
What is special about cylinders, and why do they have specific aspect ratios?
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An all-sky map of half a million supermassive black holes
The Black Hole Mapper reaches a milestone with its first southern hemisphere optical observations, coordinated eROSITA X-ray identification, and multi-epoch tracking of accreting black holes across the universe.
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How to grow green potassium ferrioxalate crystals from iron rust
Potassium ferrioxalate produces striking green crystals that are both beautiful and easy to grow. I'll show you how to grow them at home.
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Feynman On The Importance Of Playing
I'm reading " Surely You're Joking, Mr. Feynman " (very good read). What he says about burnout, playing and doing the things you love is pr...
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Designing Stereographic Lampshades
I saw an article on the Guardian website here on the 3D-printing of shapes which project interesting patterns of light. Ignoring the strangely forced Halloween reference, I thought this would be an interesting project to attempt for an arbitrary pattern, perhaps as a personalised lampshade. Buoyed by the continuing…
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Calories in, calories out
This article was discussed on Hacker News. Introduction How do we lose (or gain) weight? Is it really as simple as “calories in, calories out” (i.e., eat less than you burn), or i…
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PFAS can suppress white blood cells’ ability to destroy invaders
GenX can suppress some white blood cells' ability to kill invaders.
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Quaise Energy is working to create geothermal wells
MIT spinout Quaise Energy is working to create geothermal wells made from the world’s deepest holes in order to repurpose coal and gas plants.
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What Developmental Milestones Are You Missing?
[Epistemic status: Speculative. I can’t make this post less condescending and elitist, so if you don’t like condescending elitist things, this might not be for you.] Developmental psych…