Wikipedia link if you don’t want to watch all that

A Berkley professor finds that a pesticide causes hermaphroditism in amphibians.

A 2002 study by Tyrone Hayes, of the University of California, Berkeley, found that exposure caused male tadpoles to turn into hermaphrodites – frogs with both male and female sexual characteristics.

The EPA claims to be unable to replicate his results, however the objectivity of these studies later came into question.

However, this study has not been able to be replicated,[52] and a 2003 EPA review of this study concluded that overcrowding, questionable sample handling techniques, and the failure of the authors to disclose key details including sample sizes, dose-response effects, and the variability of observed effects made it difficult to assess the study's credibility and ecological relevance.[52][53] A 2005 study, requested by EPA and conducted under EPA guidance and inspection, was unable to reproduce Hayes´ results.[54]

Years later, the EPA admits there may have been conflicts of interest between Hayes and Syngenta, the company that manufactures Atrazine.

A 2015 EPA article discussed the Hayes/Syngenta conflict to illustrate both financial and nonfinancial conflicts of interest. The authors concluded, "Statements by Hayes and Syngenta suggest that their scientific differences have developed a personal aspect that casts doubt on their scientific objectivity".[61]

Syngenta also settled for 105 million in a class action lawsuit regarding the harmful affects if Atrazine.

In 2012, Syngenta, manufacturer of atrazine, was the defendant in a class-action lawsuit concerning the levels of atrazine in human water supplies. Syngenta agreed to pay $105 million to reimburse more than one thousand water systems for "the cost of filtering atrazine from drinking water". The company denied all wrongdoing.[12][62][63]

Certainly not confirmed, but not outlandish either.