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Self-sealing miniature ‘wound’ created by engineers

Biomedical engineers have developed a miniature self-sealing model system for studying bleeding and the clotting of wounds. The researchers envision the device as a drug discovery platform and potential diagnostic tool. A description of the system, and representative movies, were published Tuesday online by Nature Communications. Lead author Wilbur Lam, ...

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With AI, Your Apple Watch Could Flag Signs of Diabetes

Before modern chemistry brought doctors blood and urine tests for diagnosing diabetes, they had to rely on their taste buds. Sweet-tasting pee has long been the disease’s telltale biomarker; mellitus literally means honey. Too much sugar in your bodily fluids means your metabolism has gone haywire—either your cells aren’t making ...

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AI Just Learned How to Boost the Brain’s Memory

When it comes to black boxes, there is none more black than the human brain. Our gray matter is so complex, scientists lament, that it can’t quite understand itself. But if we can’t grok our own brains, maybe the machines can do it for us. In the latest issue of ...

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The Physics of One of the Craziest Big Air Snowboard Tricks Ever

Behold the stomach-clenching spectacle of the quad cork 1800. The dizzying snowboarding trick—first landed by British Olympian Billy Morgan, above—involves catapulting off a ramp into four off-axis flips (called corks) and five full spins. Only four people have ever completed the 1,800-degree stunt. But this month in Pyeongchang, South Korea, ...

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The Era of Quantum Computing Is Here. Outlook: Cloudy

After decades of heavy slog with no promise of success, quantum computing is suddenly buzzing with almost feverish excitement and activity. Nearly two years ago, IBM made a quantum computer available to the world: the 5-quantum-bit (qubit) resource they now call (a little awkwardly) the IBM Q experience. That seemed ...

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Natural telescope sets new magnification record

Extremely distant galaxies are usually too faint to be seen, even by the largest telescopes. But nature has a solution: gravitational lensing, predicted by Albert Einstein and observed many times by astronomers. Now, an international team of astronomers, led by Harald Ebeling of the Institute for Astronomy at the University ...

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The Dirty Secret of California’s Cannabis: It’s Dirty

This is a story about marijuana that begins in a drawer of dead birds. In the specimen collections of the California Academy of Sciences, curator Jack Dumbacher picks up a barred owl—so named for the stripes than run across its chest—and strokes its feathers. It looks like a healthy enough ...

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Climate Change: The Complete Guide

The world is busted. For decades, scientists have carefully accumulated data that confirms what we hoped wasn’t true: The greenhouse gas emissions that have steadily spewed from cars and planes and factories, the technologies that powered a massive period of economic growth, came at an enormous cost to the planet’s ...

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