http://news.bbc.co.uk/1/hi/world/americas/2023835.stm

http://www.42explore.com/globewrm.htm

Here is a couple of links for you. The first one was from the BBC about the manmade causes of global warming. The second link actually looks at both sides and has links to other sites both pro and con. The internet is a wonderful thing; you can almost always find a website to support any view you take.

I like to look at past evidence and both points of view before making up my mind and, sorry, I still say that humans have contributed to global warming on a large scale.

btw...we contribute is many ways, like coal, gas, and oil burning, deforestation, cattle(good ole Mc Donalds), gaslines, and even rice paddies, fertilizers and other chemicals which are released in our atmosphere. The earth is use to absorbing some Co2...but we have added a lot to the equation.