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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.
This summer, the Gates Foundation will present hygienic innovations developed through its Reinventing the Toilet Challenge.
A University of Illinois initiative takes advantage of widespread cell phone use in the developing world to more affordably teach sustainability and health practices.
If you're sitting in a typical office, using e-mail, instant messaging and corporate online...