Its true. Pesticide atrazine can turn male frogs into females Date: March 1, 2010 Source: University of California - Berkeley Summary: The herbicide atrazine, one of the world's most widely used pesticides, wreaks havoc with the sex lives of adult male frogs, emasculating three-quarters of them and turning one in 10 into females, according to a new study. These changes occur at atrazine levels below what the EPA considers safe for drinking water. The changes skew sex ratios in the frog population