Challenge: Build the Solar Powered Air Conditioner

treehugger.com — We continue to be fascinated by the idea of a solar powered air conditioner, particularly after reading this in Alternet. Until central air became common, Florida and Arizona were barely habitable- you went in winter and cleared out. Now 20% of our energy goes to power air conditioning, and it defines the peak loads. 5.5% of our gasoline goes to po