WIKI
In July 2012, Competitive Enterprise Institute (CEI) blogger Rand Simberg accused American climatologist Michael E. Mann of “deception” and “engaging in data manipulation” and alleged that the Penn State investigation that had cleared Mann was a “cover-up and whitewash” comparable to the recent Jerry Sandusky sex scandal, “except that instead of molesting children, he has molested and tortured data.” The CEI blog editor then removed the sentence as “inappropriate”, but a National Review blog post by Steyn cited it and alleged that Mann’s hockey stick graph was “fraudulent”.
Mann asked CEI and National Review to remove the allegations and apologize, or he would take action. The CEI published further insults, and National Review Editor Rich Lowry responded in an article headed “Get Lost” with a declaration that, should Mann sue, the discovery process would be used to reveal and publish Mann’s emails. Mann’s lawyer filed the defamation lawsuit in October 2012.
Before the case could go to discovery, CEI and National Review filed a court motion to dismiss it under anti-SLAPP legislation, with the claim that they had merely been using exaggerated language which was acceptable against a public figure. In July 2013, the judge ruled against this motion, and when the defendants took this to appeal a new judge also denied their motion to dismiss, in January 2014. National Review changed its lawyers, and Steyn decided to represent himself in court. Journalist Seth Shulman, at the Union of Concerned Scientists, welcomed the judge’s statement that accusations of fraud “go to the heart of scientific integrity. They can be proven true or false. If false, they are defamatory. If made with actual malice, they are actionable.”
https://en.wikipedia.org/wiki/Mark_Steyn
“engaging in data manipulation”
Unfortunately for Steyn, the evidence for temperature rise is pretty good.
The causes are far less clear.
The proposed ‘solutions’ are highly debatable.