Michael Mann’s legal woes continue: Mann now owes $1.1 Million to pay for opponents’ legal fees & penalties for misleading the court ‘in bad faith’
https://www.steynonline.com/15339/the-worm-has-turned by Melissa Howes Mann vs Steyn BREAKING NEWS IN MANN VS FREE SPEECH On Thursday afternoon, Judge Irving of the DC Superior Court ordered vexatious litigant Michael E. Mann to pay Mark’s co-defendants Competitive Enterprise Institute and Rand Simberg $477,350.80 in attorney’s fees – within thirty days. This is related to counts that were dismissed on […]
Court Delivers Massive Blow To Michael Mann, Who Sued Mark Steyn & National Review – Mann Mann ‘owes National Review approximately $530,000 to cover the outlet’s legal fees’
https://dailycaller.com/2025/04/04/court-delivers-massive-blow-famed-climate-scientist/ By Nick Pope A Washington, D.C., court rejected University of Pennsylvania climate scientist Michael Mann’s bid to postpone his required payment of hundreds of thousands of dollars to National Review on Thursday. The Superior Court of the District of Columbia ruled in January that Mann owes National Review approximately $530,000 to cover the outlet’s legal fees […]
Stephen McIntyre: ‘Mann’s DC Trick – The Statistics of Mann’s Grant Damages’
https://stephenmcintyre.substack.com/p/manns-dc-trick By Stephen McIntyre A year ago, I was a witness in the Mann v Steyn-Simberg libel trial. It was an extremely frustrating experience. Mann’s lawyers tried to block McKitrick and I from giving evidence against Mann. The judge ruled against them, saying that our evidence was relevant to the defense. However, the judge then […]
The downfall of climate change poster boy Michael Mann: ‘If Mann cannot even be trusted to tell the truth when he’s under oath & in court on pain of perjury, why on earth should any of us take him seriously on the subject of climate change?’

https://www.spectator.com.au/2025/03/the-downfall-of-climate-change-poster-boy-michael-mann/ By James Delingpole Even if you’ve never heard of Michael Mann, you will have felt his baleful influence on your energy bills. He is the inventor of the hockey stick chart, which shows a sharp increase in late 20th century global temperatures, like the blade of an ice hockey stick. It put rocket boosters […]
Judge sanctions Penn professor Michael Mann for ‘bad-faith trial misconduct’ in defamation suit
https://www.thedp.com/article/2025/03/penn-michael-mann-sanctioned-judge-defamation-trial By William Grantland A District of Columbia judge sanctioned Penn frofessor Michael Mann and his legal team on March 12 for providing misleading information during a defamation trial last year. In February 2024, Mann — Penn’s vice provost for climate science, policy, and action — was awarded more than $1 million in the suit against bloggers Rand Simberg and […]
‘In Bad Faith’: A DC court sanctions Michael Mann & his lawyers for misconduct ‘extraordinary in its scope, extent, & intent’
https://rogerpielkejr.substack.com/p/in-bad-faith By Roger Pielke Jr. Excerpt: The DC Court that heard the defamation case brought by climate scientist Michael Mann against two bloggers has ruled today that Mann and his lawyers acted in “bad faith” during the case, by presenting false claims on multiple occasions related to Mann’s grant funding: Here, the Court finds, by clear and […]
Prof. Michael Mann Sued Mark Steyn For Defamation But Judge Says Mann Misled Jury
https://dailycaller.com/2025/03/12/climate-scientist-critics-defamation-misled-jury-judge-says/ By Nick Pope University of Pennsylvania climate scientist Michael Mann and his attorneys presented misleading information to the jury in his defamation case against critics of his work, according to a judge of the Superior Court of the District of Columbia. Mann won his defamation suit against conservative writers Mark Steyn and Rand Simberg, both of […]
Michael Mann’s Big Climate Change Payday Reversed on Appeal

Michael Mann’s Big Climate Change Payday Reversed on Appeal In one of the most closely watched climate change lawsuits of all time, National Review columnist Mark Steyn was ordered by a DC jury (of course) to pay world-famous climate alarmist Michael Mann of Penn State University $1 million in punitive damages for defamation. Steyn had referred to […]
Very good news for Mark Steyn: Judge reduced the (improper) punitive damage award from $1,000,000 to an insulting $5,000
Very good news for @MarkSteynOnline. Judge reduced the (improper) punitive damage award from $1,000,000 to an insulting $5,000. Meanwhile, over $500,000 in legal costs have been awarded against Mann in favor of National Review. I wonder why CEI hasn’t submitted similar… pic.twitter.com/aWvBmY4qMs — Stephen McIntyre (@ClimateAudit) March 4, 2025 Excellent news. Hopefully this will put […]
ALERT: Prof. Michael Mann ‘intends to appeal’ court order to pay ‘National Review Inc. $530,820.21 in attorneys’ fees & costs’

Click to access 14910.pdf Excerpt: Pursuant to the Court’s June 4, 2024 and July 15, 2024 Orders, Plaintiff/Appellant, Michael E. Mann, Ph.D., respectfully files the below status report: 1. On January 6, 2025, a decision was issued on Plaintiff’s Motion for Attorney Fees Under the Anti-SLAPP Act Against Defendant Mark Steyn, filed March 11, 2024. […]