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The brain may reuse some cells to store many different memories without mixing them up with or erasing older memories, a new study in mice suggests.
Led by NYU Langone Health researchers, the study revealed that about one in four memory cells in a brain area called the hippocampus acts as a shared “hub” that links incoming and outgoing signals.
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In a dimly lit laboratory tank at Dartmouth College, an octopus sits motionless inside a small open-topped chamber. A few seconds after a crab image flickers into view on a screen behind it—visible only as a mirror reflection in front—the animal makes a decisive turn, climbs over the chamber wall, and navigates directly to the spot where the actual crab is being projected. It...
By 2030, the global data centres powering artificial intelligence are projected to consume 945 terawatt-hours of electricity. This is nearly triple the combined annual electricity use of Pakistan, Bangladesh, and Nigeria—countries collectively home to more than 650 million people. Their associated water footprint will equal the basic annual domestic water needs of all 1.3 bil...
Concerns about the health effects of ultra-processed foods are growing, as studies increasingly link them to conditions such as heart disease, diabetes, and even early death. But scientists are still debating what’s driving those risks: the nutritional quality of these foods—which are often high in saturated fat, sodium, and added sugars—or the industrial processing and addit...
Mathematicians Warn AI Could Erode Their Field: Sixteen mathematicians have issued the Leiden Declaration on Artificial Intelligence and Mathematics, warning that unchecked AI could reshape their discipline in damaging ways. The 11-page statement, endorsed by the International Mathematical Union, argues that mathematics is not simply about producing correct a...