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.

· · 来源:tutorial资讯

When you do decide the app is ready, don't forget about documentation. A lot of your ideas probably live in your chat logs and in your head, and when you come back to a project after a couple of weeks of not working on it, you may have forgotten how each element works. So, once your app is complete, go through and document everything. If you do, you’ll be much more ready to find a broken module and fix it that much faster.

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Дарья Устьянцева (редактор отдела «Мир»)

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