Atrazine is banned in 60 countries, but it's the second-most used herbicide in the United States — even though it's one of the nation's most common water contaminants and a known hormone disruptor linked to birth defects, multiple cancers, and fertility problems. It's highly toxic to wildlife, poisoning habitat for aquatic plants and animals — as well as drinking water all life needs to survive. Even at extremely low levels, atrazine can chemically castrate male frogs, leading to reproductive damage that can cause major population declines in amphibians. The U.S. Environmental Protection Agency has deemed atrazine potentially harmful to more than 1,000 federally protected species, including California red-legged frogs, whooping cranes, and San Joaquin kit foxes. But now, the U.S. Fish and Wildlife Service claims that this poison's widespread use doesn't pose an extinction risk to a single species. Despite initial tough rhetoric on atrazine's dangers as part of its Make America He...