Маргарита Щигарева
But with her job as commander, she had to pick up the mantle - she was to be in charge of the shuttle's following flight.
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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.
· 周杰 · 来源：tutorial资讯