Every act, big or small, counts. Let's all take part in saving our precious planet. http://www.greenpeace.org This fragile Earth needs action. It needs you. Music by Hecq. Additional images from NASA and ESA/Hubble.
Vaclav Smil on the Environmental Cost of Wasting Food. In this short excerpt from a chat with Bill Gates, Vaclav Smil, a longtime analyst of global trends and risks, discusses one of his newest books, "Harvesting the Biosphere, and the environmental costs of wasted food.