Why ‘Evolving’ Dark Energy Worries Some Physicists

In 2024 a shockwave rippled through the astronomical world, shaking it to the core. The disturbance didn’t come from some astral disaster at the solar system’s doorstep, however. Rather it arrived via the careful analysis of many far-distant galaxies, which revealed new details of the universe’s evolution across eons of cosmic history. Against most experts’…

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Meta, Amazon and Google accused of ‘distorting’ key AI rankings

AI models go head-to-head in Chatbot Arena Andriy Onufriyenko/Getty Images An industry-standard league table for ranking artificial intelligence models is being deliberately distorted by technology giants, researchers have claimed, leading to a misleading picture of which AIs are the best. Sara Hooker at Cohere Labs, a US non-profit, and her colleagues claim to have found…

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