Kristy
05-22-2008, 08:35 AM
http://graphics8.nytimes.com/images/2008/04/15/science/solar_7575.jpg (http://www.nytimes.com/2008/04/15/science/earth/15sola.html?partner=rssnyt&emc=rss)Solar thermal systems are built to gather heat from the sun and then store the heat for hours or even days, like water behind a dam.
More... (http://www.nytimes.com/2008/04/15/science/earth/15sola.html?partner=rssnyt&emc=rss)
More... (http://www.nytimes.com/2008/04/15/science/earth/15sola.html?partner=rssnyt&emc=rss)