Global Warming??? Sure.
HUMAN CAUSED Global Warming??? Bull Pucky!
Humanity has existed for ~5000 years in any numbers and only in the last century developed the ability to produce any reasonable (but microscopic in global terms) levels of greenhouse gasses.
There was an ice age, now there isn't. Did humanity cause that?
There is a periodic warming/cooling of the atmosphere that has been recorded and well documented that has cycled for eons of measured time. (via core samples)
This chart was produced from data provide by N.O.A.A. evaluating Antarctic ice core samples.
You're right, that was my mistake. The title should read "human caused global warming."
Maybe we can get the mod to fix it?