Professor James Lovelock, the scientist who developed Gaia theory, has said it is too late to try and save the planet.
The man who achieved global fame for his theory that the whole earth is a single organism now believes that we can only hope that the earth will take care of itself in the face of completely unpredictable climate change.
Interviewed by Today presenter John Humphrys, videos of which you can see below, he said that while the earth's future was utterly uncertain, mankind was not aware it had "pulled the trigger" on global warming as it built its civilizations.
'We're not really guilty. We didn't deliberately set out to heat the world'
What is more, he predicts, the earth's climate will not conveniently comply with the models of modern climate scientists.
As the record winter cold testifies, he says, global temperatures move in "jerks and jumps", and we cannot confidently predict what the future holds.
'The world doesn't change its climate conveniently'
Prof Lovelock does not pull his punches on the politicians and scientists who are set to gain from the idea that we can predict climate change and save the planet ourselves.
Scientists, he says, have moved from investigating nature as a vocation, to being caught in a career path where it makes sense to "fudge the data".
'Science has changed in our lifetime'
And while renewable energy technology may make good business sense, he says, it is not based on "good practical engineering".
Renewable technology 'doesn't really work'
At the age of 90, Prof Lovelock is resigned to his own fate and the fate of the planet. Whether the planet saves itself or not, he argues, all we can do is to "enjoy life while you can".