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.
根据世界卫生组织的定义，一对夫妇12个月以上未采取任何避孕措施，性生活正常却未孕，就属于不孕不育。女性称为“不孕症”，男性称为“不育症”。
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Scientists at the Leibniz Institute of Atmospheric Physics use Lidar lasers to measure the stratosphere and mesophere
Москвичей предупредили о резком похолодании09:45
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Овечкин продлил безголевую серию в составе Вашингтона09:40