Gaia and accelerating climate change

Gaia and accelerating climate change, It was in the late 1960s that James Lovelock first suggested the Earth acted as a single organism. He named his observation, Gaia. He was ridiculed and the idea was ignored for decades. It wasn't until the end of the 90s that a new branch of science grew out of his theory; that of Earth System Science. Now, as the effects of climate change have become obvious for all to see, James Lovelock has taken his theory further in a book, The Revenge of Gaia. Lovelock claims we've passed the point of no return with climate change. This week, The Science Show traces the growth of Lovelock's theory and gathers views from climate scientists about his apocalyptic vision...