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.

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在今年 MacBook 的「美式英语」键盘上，苹果将之前的 tab、caps lock、shift 和 enter 全都换成了纯符号：

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