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Air pollution linked to “huge” reduction in intelligence
Air pollution can have a “huge” negative effect on cognitive intelligence – especially amongst older men – according to a study released this past August.
Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 4,454 posts.
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Good sleep, good learning, good life (2012)
The good educator insists on exercise, play, and plentiful sleep: "the great cordial of nature."
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Violence alters human genes for generations, researchers discover
Children of Syrian refugees inherit the stress of civil war.
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Controlling the nuclear fusion plasma in a tokamak with reinforcement learning
Successfully controlling the nuclear fusion plasma in a tokamak with deep reinforcement learning
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Testing the F-35C Tailhook
Welcome to the blog. As a way to kick things off, here’s a single-page version of my thread on the F-35C tailhook.
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80-year Harvard study has been showing how to live a healthy and happy life
For nearly 80 years, the Harvard Study of Adult Development has been producing data and lessons on how to live longer, happier, and healthier lives.
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Visualizing World War II
If you’ve been reading this blog for any length of time, you’ll know that maps and history are two of my favorite things. I love history because I love learning about the vast panoply of the human …
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FDA approves first test of CRISPR for genetic defect causing sickle cell disease
UC scientists and physicians hope to permanently cure patients of sickle cell disease by using CRISPR-Cas9 to replace a defective gene with the normal version
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You need to know what right-half-plane zeros are
Why some systems -- as a consequence of their intrinsic dynamics -- require a control action that first pushes them the wrong way and makes things worse before it gets better.
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Homemade 6 GHz pulse compression radar
Designing a modern pulse compression radar that uses digital signal processing.
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Open Problems in Robotics
Robotics is one of those things the business funny papers regularly wonder about; it seems like consumer robotics is a revolutionary trillion dollar market which is perpetually 20-years away -more…
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The 'Batman Effect': How having an alter ego empowers you (2020)
Thinking of yourself as a separate entity can reduce anxiety, while also kicking up some major benefits for your confidence and determination.
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Sci-Hub and Alexandra Basic Information
I decided to make a quick summary of facts about Sci-Hub and myself, because in our times you cannot fully trust articles published in media, Wikipedia pages. Well, they do present facts about Sci-…
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Shortest-possible walking tour to 81,998 bars in South Korea
We have solved a traveling salesman problem (TSP) to walk to 81,998 bars in South Korea. The problem was created using the Open Source Routing Machine (OSRM) to build a table of the 3,361,795,003 point-to-point travel times, one for each pair of bar locations. Our computation produced a tour together with a proof that…
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Euclid's First Images
Euclid, our dark Universe detective, has a difficult task: to investigate how dark matter and dark energy have made our Universe look like it does today. 95% of our cosmos ...
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LED lighting badly suppresses human melatonin production at night
Yes, it’s a spicy title. Yes, I plan to back it with what I consider very reasonable evidence of the claims, in the form of a lot of research papers. I would simply ask that you read to the end before deciding I’ve lost it.
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Toothpaste made with keratin may protect and repair damaged teeth: study
Toothpaste made from your own hair may offer a sustainable and clinically effective way to protect and repair damaged teeth.
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What does the cerebellum do?
Hint: It's Not Just Balance
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Sleep on it: How the brain processes many experiences, even when 'offline'
In a new study, Yale researchers uncover how the brain, during sleep, replays and bundles many of the experiences that occur in our waking hours.
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If math is more than proof, we need to better celebrate the rest of it
[This is a guest post by Grant Sanderson. This blog post was initially written in a different file format and converted using AI. — T.] A sentiment echoing throughout the mathematics communit…
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The SpaceX Starship is a big deal
Part of my series on common misconceptions in space journalism. Now available in audio form. SpaceX has been working on some variant of the Big Falcon Rocket for almost a decade, with a publicly an…
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Wi-Fi signals enable gesture recognition throughout entire home
University of Washington researchers have shown it's possible to leverage Wi-Fi signals around us to detect specific movements without needing sensors on the hu
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No amount of alcohol is good for the heart, says World Heart Federation
GENEVA (20 January 2022) – In a new policy brief, the World Heart Federation (WHF) challenges the widespread notion that drinking moderate amounts of alcohol can decrease the risk of heart disease, and calls for urgent and decisive action to tackle the unprecedented rise in alcohol-related death and disability…
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A new form of brain stimulation relieved severe depression in a small study
Stanford Medicine researchers used high doses of magnetic stimulation, delivered on an accelerated timeline and targeted to individual neurocircuitry, to treat patients with severe depression.
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BPS is a GPS alternative that nobody's heard of
I came to the NAB (National Association of Broadcasters) show this year with my Dad to learn more about time in broadcast and live production. I was expecting to learn more about grandmaster clocks, AV sync, timing in protocols like Dante, Livewire, AES67, and more—and I have. But then on the first day here I found…