The certainty with which people state totally uninformd opinions constantly amazes me.
1. The earth is warming up. There is absolutely no debate about this among people who have bothered to look at the data. Which can be seen here:
http://www.cru.uea.ac.uk/cru/info/warming/
2. We have radically altered the amount of CO2 in the atmosphere, as can be seen here:
http://earthguide.ucsd.edu/globalchange/keeling_curve/01.html
3. Beginning more than 30 years ago, scientists studying the effects of CO2 concentration in the atmisphere began predicting the changes that are now visible all over the world. Like the Larsen B ice shelf melting off of Anarctica, which can be seen here:
http://nsidc.org/iceshelves/larsenb2002/
So deny it all you want. But don't bother acting like you have bothered to become well informed about the issue, because it just makes you look more clueless.