Half of the Milky Way comes from other galaxies

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A galaxy may swipe up to half of its atoms from other galaxies, making the Milky Way mostly extragalactic stuff, new simulations suggest.

50 years ago, diabetic mice offered hope for understanding human disease

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Mice described in 1967 are still helping researchers understand diabetes.

Ancient DNA offers clues to the Canaanites’ fate

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DNA is painting a more detailed portrait of the ancient Canaanites, who have largely been studied through the secondhand accounts of their contemporaries.

Perry claims US doesn’t need Paris accord to cut CO2

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The manipulative tricks tech companies use to capture your attention | Tristan Harris

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A handful of people working at a handful of tech companies steer the thoughts of billions of people every day, says design thinker Tristan Harris. From Facebook notifications to Snapstreaks to YouTube autoplays, they’re all competing for one thing: your attention. Harris shares how these companies prey on our psychology for their own profit and calls for a design renaissance in which our tech instead encourages us to live out the timeline we want.