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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NASA described the evacuation as a "controlled expedited return," rather than an emergency deorbit, which would mean departing the station immediately, regardless of the landing's timing, sea conditions, or weather.

Each year the birds must stay on platforms of floating ice for long enough to replace weather-beaten feathers with new, waterproof coats.

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Mapping of neurogenesis in human hippocampi across ages and different cognitive abilities using multiomic single-cell sequencing reveals distinct signatures between cognitive preservation and decline.

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