|by Flemming Funch|
Dean Kamen, inventor of the Segway scooter, and many other interesting things, introduced last Thursday a portable water purifier that he hopes will save millions of people around the world from shortages of fresh water. It is a 100 pound device which requires little maintenance and uses no chemicals or filters. It uses a specialized distillation and condensation process and produces 10 gallons of clean water an hour on 500 watts of electricity. The idea is that it goes hand in hand with a generator he's also developed, which uses a Stirling engine to produce electricity.