U.S. Government Web Sites
National Aeronautics and Space Administration (NASA) – Climate Change
National Oceanic and Atmospheric Administration (NOAA)
National Oceanic Atmospheric Administration Climate Program Office
National Science Foundation Directorate for Geosciences
United States Agency for International Development – Global Climate Change
United States Agency for International Development – Energy
United States Carbon Cycle Science Program
United States Forest Service Office of the Climate Change Advisor
United States Department of Energy – Environmental Cleanup
United States Department of the Interior – Climate Change
United States Department of Transportation – Climate Change
United States Department of State – Global Climate Change
United States Environmental Protection Agency – Climate Change
United States Global Change Research Program
The White House – Energy and Environment
Climate Change Partners
Intergovernmental Panel on Climate Change
United Nations Framework Convention on Climate Change
Carbon Sequestration Leadership Forum
Social media sites
United States Department of State Office of Oceans, Environment and Science Facebook
United States Global Change Research Program Facebook
Global Conversations: Climate Facebook