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The Drinkable Book is a guide to safe drinking water -- and the pages can be torn out and used as water filters.
A University of Illinois initiative takes advantage of widespread cell phone use in the developing world to more affordably teach sustainability and health practices.
This summer, the Gates Foundation will present hygienic innovations developed through its Reinventing the Toilet Challenge.
If you're sitting in a typical office, using e-mail, instant messaging and corporate online...