Michael Pritchard's Water Filter Turns Filthy Water Drinkable

Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds.

"Michael Pritchard's Water Filter Turns Filthy Water Drinkable", accessed November 3, 2010 http://www.ted.com/talks/lang/eng/michael_pritchard_invents_a_water_filter.html

Tony Shi November 4/10