5/14/2013

In his book "The Origin of Feces," veterinarian and epidemiologist David Waltner-Toews argues that using animal and human waste to create energy is a key route to global sustainability. Dr. Waltner-Toews cites several examples of how humans can capitalize on waste, including converting cow dung in Nepal and India into energy and using dog feces in Massachusetts to fuel a street light.

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