Michael Mann, then-professor of atmospheric science at Penn State, arrives at the "Before the Flood" premiere on day 2 of the Toronto International Film Festival at the Princess of Wales Theatre on Sept. 9, 2016, in Toronto. Closing arguments are expected Wednesday, Feb. 7, 2024, in a defamation lawsuit brought by Mann against a pair of conservative writers who compared him to a convicted child molester for his depiction of global warming. (Photo by Evan Agostini/Invision/AP, File)
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