HARDtalk - James Lovelock

Stephen Sackur to James Lovelock, the celebrated scientist and writer. James founded the Gaia theory - the idea that the planet acts like a single organism. He has long spoken of Man's 'unsustainable exploitation' of the planet and the grave consequences that will follow. Now ninety years old, he describes his latest book as a final warning on the fate of the planet. Stephen Sackur asks him if humanity is likely to heed that warning.