Climate Wars (Episode 2)

by BBC:

In the early 90′s environmentalists were predicting doom and gloom unless we quickly cleaned up the planet. Skeptics were quick to respond by calling global warming a natural occurrence, as opposed to a modern, man-made phenomenon. As you will discover by selecting the link below, scientists were able to show those skeptics some compelling evidence suggesting that the warming of our earth has little to do with the word “natural”.