Some people in this thread need to stop shouting at each other and start doing a bit of (very easy) research.
Here's your starter for 10 as they say on University Challenge (a reference for Brits):
http://www.foxnews.com/scitech/2012/...-study-claims/
http://online.wsj.com/article/SB1000...838421366.html
http://rps3.com/Pages/Burt_Rutan_on_Climate_Change.htm
RedToo.