Trillions of bacteria live in each person's digestive tract. Scientists believe that some of these bacteria help digest food and stave off harmful infections, but their role in human health is not well understood.
Jul 24, 2014
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Eating outside is one of the joys of summer. Picnics, barbeques, and camping are all opportunities to dine al fresco. But when packing food, you don't want to bring along any uninvited guests who might spoil ...
Aug 06, 2014
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