Pictures

References

Alpert, Mark. "Sun Power Gets a Boost". Scientific American 2008: 50-51.

"Passive Solar Energy". SESCI. 6 March 2008 <http://www.newenergy.org/sesci/publications/pamphlets/passive.html>.

Schaeffer, John. Solar Living Source Book. California: Gaiam Real Goods, 2001.

"Sources of Energy". World Almanac for Kids. New York: World Almanac Education Group Inc., 2004.