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Speaker discusses atrazine, described as the second most used chemical in the country and a pesticide. Claims it is banned in Europe and worldwide, but is used domestically, and is present in 63% of drinking water. Refers to a study by a famous African American scientist named Tyrler/ Tyler Hayes at the University of Berkeley. In the experiment, he put 70 African water frogs in an aquarium and added atrazine to the water at a level below the EPA’s threshold. Results reported: 60 of the frogs became sterile, and all of those were male. Additionally, 10% of the frogs turned female and were able to produce fertile eggs, indicating a sex change. The speaker notes that, given such an animal model result, the next step would typically be to test in a mammalian model and a human model, but those tests were never conducted.