Michael Pritchard makes filthy water drinkable http://www.youtube.com/watch?v=rXepkIWPhFQ Michael Pritchard makes filthy water drinkable Michael Pritchard makes filthy water drinkable http://www.youtube.com/watch?v=rXepkIWPhFQ You have to see it to believe it http://www.youtube.com/watch?v=rXepkIWPhFQ TED Talks – Michael Pritchard makes filthy water drinkable http://www.youtube.com/watch?v=rXepkIWPhFQ http://www.youtube.com/watch?v=rXepkIWPhFQ demonstrate the technology at TED 2009