I personally do not believe in man made global warming, and think it is just a cycle in the earth's behavior in climate.
BTW Here's a couple of links that shed some more light:
There's some more I have. Thanks, jcutsh :mrgreen:.
Here's a video that I came across for those with a shorter attention span
and an hour to kill lol:
here is one for even shorter attention spans...as less 5mins..