October 3, 2025 - Mann had faced criticism over his social media posts about the killing of Charlie Kirk, but he said that it was his choice to step down from an administrative role. He will remain a professor at Penn.

October 11, 2025 - Michael Mann, a climate scientist ... at Penn, announced on his website last week that he was stepping down from that position in a move he says was his decision and based on the “science policy advocacy work” he was doing...

Michael Mann has resigned from his position at the University of Pennsylvania. In a statement announcing his resignation Monday, Mann said his activism conflicts with the university’s “established institutional neutrality policy.”

Mann went on a social media spree ... of Trump’s Hitler Youth.” Despite later attempting to backtrack, Mann has now resigned from his role as Vice Provost for Climate Science, Policy, and Action....

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Cotour on Climategate global-warming activist Michael Mann resigns from PennU after celebrating murder of Charlie Kirk Oct 5, 06:49

October 8, 2025 - Mann went on a social media spree ... Despite later attempting to backtrack, Mann has now resigned from his role as Vice Provost for Climate Science, Policy, and Action....

October 1, 2025 - (Daily Caller News Foundation) – Climate scientist Michael Mann has resigned from the University of Pennsylvania (UPenn) after fallout from controversial comments he posted following the assassination of Turning Point USA founder Charlie Kirk.

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September 30, 2025 - 29 announcement made on his personal website, Mann stated that his scientific advocacy work conflicts with Penn’s “established institutional neutrality policy.” The announcement came two weeks after Sen. Dave McCormick (R-Pa.) called for Penn to take action against Mann in light of his social media activity — including reposts and a since-deleted post of his own — regarding the death of conservative activist Charlie Kirk.

September 30, 2025 - Climate scientist Michael Mann has resigned from the University of Pennsylvania after his comments about Turning Point USA founder Charlie Kirk's assassination.

September 30, 2025 - The left-wing climate scientist and political activist Michael Mann resigned on Tuesday from his post as vice provost at the University of Pennsylvania. Mann stirred up controversy repeatedly over the past several months, most recently when ...

September 30, 2025 - Recently, Mann reposted comments calling Charlie Kirk the “head of Trump’s Hitler Youth.” · “In a Sept. 29 announcement made on his personal website, Mann stated that his scientific advocacy work conflicts with Penn’s ‘established institutional neutrality policy.’ … Particularly at this moment in time, I don’t feel that I can forsake the public scholarship and advocacy that I am doing and have thus decided to step down from the VPC role.” — Michael Mann, quoted in the Daily Pennsylvanian

October 8, 2025 - An already-controversial professor, who made disparaging comment about Charlie Kirk, claims he resigned from one of his university positions because of the school's neutrality clause.

September 30, 2025 - Recently, Mann reposted comments calling Charlie Kirk the “head of Trump’s Hitler Youth.” · “In a Sept. 29 announcement made on his personal website, Mann stated that his scientific advocacy work conflicts with Penn’s ‘established institutional neutrality policy.’ … Particularly at this moment in time, I don’t feel that I can forsake the public scholarship and advocacy that I am doing and have thus decided to step down from the VPC role.” — Michael Mann, quoted in the Daily Pennsylvanian

September 30, 2025 - Climate scientist Michael Mann has resigned from the University of Pennsylvania (UPenn) after fallout from controversial comments he posted following the assassination of Turning Point USA founder Charlie Kirk.