SOLAR - Exciting Ideas In Solar Energy From ARPA-E

Now in its fourth year, the summit of the Advanced Research Projects Agency-Energy (ARPA-E) never fails to bring out the most cutting-edge ideas in renewable energy. This week's conference in Washington D.C. is no exception. I walked the exhibition floor today and ran across some sexy new concepts in solar power.

http://www.forbes.com/sites/davidferris/2013/02/26/exciting-ideas-in-s