Kristy
03-03-2008, 03:50 PM
http://graphics8.nytimes.com/images/2008/02/25/science/25obse.752.jpg (http://www.nytimes.com/2008/02/26/science/26obsola.html?partner=rssnyt&emc=rss)Over the life cycle of solar cells — from the mining of raw materials to the finished product — just how green are they?
More... (http://www.nytimes.com/2008/02/26/science/26obsola.html?partner=rssnyt&emc=rss)
More... (http://www.nytimes.com/2008/02/26/science/26obsola.html?partner=rssnyt&emc=rss)