Waiting room enlightenment

US News has an article on the Chicago Climate Exchange, a trading board for greenhouse gases founded by an economist from Northwestern. While some US companies and cities have been participating in it voluntarily, CCX is also moving into Europe, where because the Kyoto protocol is in force carbon trading is a much larger market.

The NY Times says that the supply of solar cells isn't keeping up with demand, especially in anticipation of California's Million Solar Roofs program. A big bottleneck is the supply of silicon crystals, which suggests substantial opportunities for people using alternate materials as well as thin silicon cells, such as those made by Heliovolt and Evergreen respectively.