Micro-5: Gut reactions in space

Our guts literally teem with beneficial bacteria. But not all bacteria are harmless. Disease-causing bacteria, known as pathogens, can infect our intestines, causing illness or even death. Bacterial pathogens can contaminate ...

Reddit cracks down on posting nude pics

(AP)—Social-networking and news site Reddit says it will remove photos, videos and links with explicit content if the person in the image hasn't given permission for it to be posted.

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