The Intergovernmental Panel on Climate Change (IPCC)
The Intergovernmental Panel on Climate Change (IPCC) was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess the available scientific, technical, and socio-economic information in the field of climate change.
www.ipcc.ch/   reviews

NASA's Global Change Master Directory
The Global Change Master Directory is a comprehensive directory of information about Earth science data, including a broad coverage of global warming, the oceans, atmosphere, hydrosphere, solid earth, biosphere and human dimensions of global change.
gcmd.gsfc.nasa.gov/   reviews

Climate Ark -- Climate Change & Renewable Energy Portal
Climate Ark -- Climate Change News & Information Portal and Archive. Full Text Searches & Information Archive of Reviewed Climate Change Internet Content.
www.climateark.org/   reviews

WWF - Climate Change Campaign
Global warming is a matter of life and death - we must turn down the heat. WWF's priority is to reduce carbon pollution from industrialized nations through: publicising climate change impacts, partnerships with forward-looking businesses, national energy-saving and clean energy campaigns, ensuring the ...
www.panda.org/climate/   reviews