Link utili

The International Solar Energy Society
http://www.ises.org/

International Energy Agency
http://www.iea.org/

European Environmental Bureau
http://www.eeb.org/

Intergovernmental Panel on Climate Change
http://www.ipcc.ch/

An Inconvenient Truth
http://www.climatecrisis.net/

Solar Energy on Wikipedia
http://en.wikipedia.org/wiki/solar_energy

How Solar Cells Work
http://www.howstuffworks.com/solar-cell.htm