Richard Muller claimed he was a converted skeptic.
The Conversion of a Climate-Change Skeptic
By RICHARD A. MULLER Published: July 28, 2012
CALL me a converted skeptic. 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.
Less than a year earlier, Muller said he never was a skeptic.
“It is ironic if some people treat me as a traitor, since I was never a skeptic“
A decade earlier he made it clear that he was a flaming alarmist who wanted to prove global warming.
By Richard Muller on December 17, 2003
Let me be clear. My own reading of the literature and study of paleoclimate suggests strongly that carbon dioxide from burning of fossil fuels will prove to be the greatest pollutant of human history. It is likely to have severe and detrimental effects on global climate. I would love to believe that the results of Mann et al. are correct, and that the last few years have been the warmest in a millennium.