http://www.developpement-durable.gouv.fr/

An interesting site of New York Times about climate science & policy.
http://www.nytimes.com/interactive/2009/12/07/science/20091207_CLIMATE_TIMELINE.html

 

Climate Science & Policy

hosts and promotes an open international discussion on climate science, policy and economics.

http://www.climatescienceandpolicy.eu/

Proclim Switzerland

The Swiss Academy of Science point of view

http://www.proclim.ch/

Bioenergy Feedstock Information Network

A list of conversion factors for energy units