 Prof. Michael Mann / Penn State University 
 
 An internal investigation at Penn State University has cleared meteorology professor Michael Mann of all "climate gate" charges, in which Mann stood accused (both formally and in the blogosphere) of research fraud. He accused the panel of failing to interview important witnesses.
– Another investigation into the so-called Climategate scandal has found no evidence that researchers manipulated data to buttress their case for global warming. In the latest, Penn State today cleared Michael Mann, the meteorology professor at the heart of the controversy, of research fraud, reports CBS. It's the fourth investigation, including the second of Mann in particular, to exonerate the scientists. The review did give Mann a slap on the wrist for sometimes sharing the work of other researchers before getting consent. “I’m aware, and many researchers now are keenly aware, of the depths to which the climate-change disinformation movement is willing to sink, to the point where they’re willing to criminally break into a university server and steal people’s personal email messages,” Mann tells the New York Times. End of the controversy? Nope. A critic who leads a DC advocacy group calls the Penn State results a "whitewash."