U.S. Environmental Protection Agency – Office of Air and Radiation April, 2009
www.globalchange.gov/images/documents/toolkit/Climate_Change_FAQ/
Climate_Basics_8pager_508_v4.pdf
U.S. Environmental Protection Agency
www.epa.gov/climatechange/basicinfo.html
U.S. Global Change Research Program
www.globalchange.gov/images/cir/pdf/4page-companion-brochure.pdf
National Oceanic and Atmospheric Administration – National Climatic Data Center
www.ncdc.noaa.gov/paleo/ctl/
http://education.usgs.gov/common/video_lectures.html
U.S. Geological Survey Office of Global Change
www.usgs.gov/global_change/
United Nations Environment Programme
www.earthwire.org/climate/
Pew Center on Global Climate Change
www.pewclimate.org/global-warming-basics
Union of Concerned Scientists
www.ucsusa.org/global_warming/
