NY Times: The Conversion of a Climate-Change Skeptic
Looking back at 250 years of land surface temperatures converts global warming skeptic to a believer. The data proves so conclusive that Richard Muller says he is going a step further than scientific statements of the past, saying that "Humans are almost entirely the cause". The data is available for all to see and analyze. Clearly the time for debate is long past. We must act now to avert disaster. For all the background and detailed data see - Berkeley Earth at - http://berkeleyearth.org .

"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." New York Times, RICHARD A. MULLER, July 28, 2012