Damn, that is cool. A real world problem solved elegantly using a byproduct of electricity production – friggin genius. I love this guy. And, again, I feel just a little dumber.
Oh, and in case you say to yourself, "sure, I could have used Stirling engine technology to develop a water purification system that doesnt require consumables", could you do this? http://www.ibotnow.com/
Dean Kamen could.