CBS News | Kamen's Next Big Project | November 13, 2002 18:39:10 "In the emerging world, in the under-developed world, a gallon of water is so precious that without it, you're going to die," he says. "In some places, the average amount of time per day spent looking for water that's safe for their kids by women is four hours. And they carry this stuff, which weighs 62 pounds per cubic foot, four or five miles. And if it didn't turn out to be the right stuff, or they put their hands in it and contaminated it, they spend the next day or two burying the babies."



Kamen began experimenting with a Stirling engine. The Stirling engine is named after its designer, Robert Stirling, a 19th Century Scottish minister. Basically, it is non-polluting device that plays heat against cold to create energy. It is a closed box with two chambers, one filled with gas.