This vein visualization technology uses near-infrared light, which is absorbed by blood but reflected by the surrounding tissue, to locate veins up to 15mm deep, and then projects the results back on the skin. pic.twitter.

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A Game of Doves and Hawks

Try Brilliant’s Computational Biology course: Primer on Patreon! to supporters on Patreon, especially:Vladimir Duchenchuk, Victor Anne, Noah Healy, Zachariah Richard Fournier, Patrick Gorrell, Jordan Scales, Jacob M

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The TikTok War

Over the last week, as the idea of banning TikTok in the U.S. has shifted from a fringe idea to a seeming inevitability (thanks in no small part to India’s decision to do just that), those opposed to the idea and those in support seem to be talking past each other.

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