(Source: American Museum of Natural History) © AMNH/R. Mickens The microbes in and on your body are more numerous than the stars in the Milky Way. Clump them together, and they weigh about as much as your brain-about three pounds. And contrary to the common misconception that all microbes-the term used for organisms that are too small to be seen with the naked eye-are 'germs' that cause disease, most of the ones that live in your body are vital to keeping your digestive system, your immune system, and even your brain working properly. Opening on November 7, 2015, The Secret World Inside You, a special exhibition from the American Museum of Natural History, uses larger-than-life models,...
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