Professor Richard Muller, a climate scientist who was previously sceptical about the concept of climate change, has apparently changed his mind, calling himself a "converted sceptic".
The Professor, who leads the Berkeley Earth Project which is investigating the claims made by other climate researchers, has admitted that human activity is causing the Earth to warm up. The project team argues that the good correspondence between the new temperature record and the historical CO2 emissions data suggests that humans can be blamed.
Professor Muller said, "Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming. Last year, following an intensive research effort involving a dozen scientists, I concluded that global warming was real and that the prior estimates of the rate of warming were correct. I'm now going a step further: Humans are almost entirely the cause."
He added,"I hope that the Berkeley Earth analysis will help settle the scientific debate regarding global warming and its human causes. Then comes the difficult part: agreeing across the political and diplomatic spectrum about what can and should be done."
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