Environment in crisis: 'We are past the point of no return'
Thirty years ago, the scientist James Lovelock worked out that the Earth possessed a planetary-scale control system which kept the environment fit for life. He called it Gaia, and the theory has become widely accepted. Now, he believes mankind's abuse of the environment is making that mechanism work against us. His astonishing conclusion - that climate change is already insoluble, and life on Earth will never be the same again."