"Penn State University scientist Michael Mann, whose work showed that Earth’s temperatures have risen along with increased fossil fuel use, announced Tuesday he had filed a lawsuit against the conservative National Review and the Competitive Enterprise Institute for defamation, complaining that they falsely accused him of academic fraud and compared him to convicted child molester Jerry Sandusky."
"Organizations that deny climate change is a serious problem have condemned Mann for years.
Mann was one of the scientists whose emails were hacked from a climate research center at Britain’s University of East Anglia in 2009. Climate skeptics quoted portions of the emails in an attempt to discredit the scientists in what the critics dubbed "Climategate." But government and university investigations found no misconduct."