Source 1
Cooler Heads Coalition http://www.globalwarming.org/ ©2010
Found on 10/11/10
Source 2
Global Warming
http://topics.nytimes.com/top/news/science/topics/globalwarming/index.html
©2010
Found on 10/11/10
Source 3
Climate Change
http://www.epa.gov/climatechange/
Last updated on October 1, 2010
Date found: 10/11/10
Source 4
Global Warming
http://www.nwf.org/Global-Warming.aspx
©1996-2010
Date found: 10/11/10
The links are fine. Did you not find authors listed on any of the sites?
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