Rather than, you know, letting science decide this sort of stuff, Canada’s most well-known climate-change skeptic is taking opponents to court.

The case revolves around a letter to the editor that he claims was a “malicious attack” on his credibility.

Tim Ball has made a name for himself as an outspoken challenger to the overwhelmingly accepted (especially in Canada) consensus that humans are causing global climate change. He authored an opinion piece on global warming for the Calgary Herald last April which drew at least one letter to the editor questioning his credentials.

The op-ed described Ball as the first climatology Ph.D. in Canada and as a professor of climatology at the University of Winnipeg for 28 years. In fact, Ball became a professor there in 1988, and has since retired.

University of Lethbridge environmental science professor Dan Johnson wrote that Ball had “falsified his professional and academic credentials” and he does not have the qualifications to make “serious comments” about global warming.

In turn, Ball is suing the Calgary Herald, the University of Lethbridge, and Dan Johnson for a $325,000.

Ball has been trying to propagate the notion that there is debate over global climate change among qualified scientists, and claims that the allegations in the letter to the editor qualify as defamation.