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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‘4심제’ 재판소원법 與주도 국회 통과…헌재가 대법판결 번복 가능

Their premature departure left Chris Williams, who arrived on a Russian Soyuz spacecraft in November 2025, as the only American astronaut at the station for a month until Crew-12 arrived on Feb. 14.

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Could you tell this is an AI-generated image?

These aren't contrived scenarios invented by test authors in total vacuum. They're consequences of the spec's design and reflect real world bugs.

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