Daily Beast: Four years ago UC-Berkeley physics professor Richard Muller began releasing the results of a sweeping two-year climate study. It confirmed what the overwhelming majority of other climate studies had also found: that the Earth was warming and humans were almost entirely responsible. But what set Mullers study apart was that prior to the release of his report, he had been known as a leading climate-change skeptic. For years he had criticized exaggerators like Penn States Michael Mann, who popularized...