when someone tells you, "Here's my theory", chances are he's wrong.
maybe you ought to ask what real scientists think.
and why they think that.
NAS, NOAA, NSF, NASA, EPA, MIT, UCLA all agree. AGW (Anthropogenic Global Warming) is a serious problem.
http://www.nasonline.org/site/PageServer
"May 19, 2008: The National Academies have released the 2008 edition of "Understanding and Responding to Climate Change," a free booklet designed to give the public a comprehensive and easy-to-read analysis of findings and recommendations from our reports on climate change."
http://dels.nas.edu/dels/rpt_briefs/climate_change_2008_final.pdf <== here's a good description.
http://www.funnyweather.org/ <== this is a more lighthearted link.
http://en.wikipedia.org/wiki/Greenhouse_effect <== and one with too much detail.
http://www.sciencefriday.com/videos/watch/10125 <== Michael Oppenheimer, a member of the Nobel Peace Prize-winning Intergovernmental Committee on Climate Change and professor at Princeton
http://www.lenntech.com/greenhouse-effect/global-warming-history.htm <== btw this is not a new idea.
http://lwf.ncdc.noaa.gov/oa/climate/globalwarming.html
http://www.ncdc.noaa.gov/paleo/globalwarming/home.html
http://lwf.ncdc.noaa.gov/oa/climate/research/2008/perspectives.html
http://www.exploratorium.edu/climate/ <== not regulated by the government.
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here are some reasons people think it's wrong.
and why they are wrong.
http://scholarsandrogues.wordpress.com/2007/07/23/anti-global-heating-claims-a-reasonably-thorough-debunking/
http://environment.newscientist.com/channel/earth/dn11462
http://www.skepticalscience.com/
http://greenhome.huddler.com/wiki/global-warming-and-climate-change-causes