This New Yorker article tells the story of Tyrone Hayes, a scientist who discovered links between Atrazine and frog feminization. His research was originally funded by Syngenta who makes Atrazine, but once he published negative results, they worked to discredit him.
This is a great, well reasearched example of "corporate trolling" as paul likes to say
He got surgery to replace his foot with a pig. He said it was because of this tiny ad:
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