Science

The Teeming Metropolis of You

You are mostly not you. That is to say that 90 percent of the cells residing in your body are not human cells, they are microbes. Viewed from the perspective of most of its inhabitants, your body is not so much the temple and vessel of the human soul as it is a complex and ambulatory feeding mechanism for a methane reactor in your small intestine. This is the kind of information microbiologists like to share at dinner parties... Learn more »

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