A new study shows that exposure to two specific 'forever chemicals' may accelerate biological aging, especially in middle-aged men. Researchers revealed a link between faster epigenetic aging, and two of these alternatives, PFNA and PFOSA, a precursor of PFOA.

· · 来源：tutorial资讯

Sam Altman told OpenAI employees at an all-hands meeting on Friday afternoon that a potential agreement is emerging with the U.S. Department of War to use the startup’s AI models and tools, according to a source present at the meeting and a summary of the meeting seen by Fortune. The contract has not yet been signed.

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