The War on Science:

Not only is atrazine effective, it is safe. The chemical has been on the market for half a century, during which time its safety has been tested to death—some 6,000 studies, here and abroad, including reviews by the World Health Organization and other international bodies.

Following a dozen years of exhaustive examination of scientific evidence about claims of possible health problems stemming from the chemical, the EPA’s Office of Pesticide Programs reported to Congress on February 16, 2005: “After a very careful assessment, EPA’s current view is that the available studies do not adequately demonstrate such effects. A panel of independent, external experts, the SAP, supports EPA’s position.” Concluding that cumulative risks posed “no harm that would result to the general U.S. population, infant, children or other . . . consumers,” the EPA re-registered atrazine for use in 2006...

[T]he NRDC and its allies aim to make toxicology safety thresholds so stringent that no agrochemicals could past legal muster. That’s precisely why they’ve singled out atrazine. As the Wall Street Journal noted recently, “The environmental lobby also figures that if it can take down atrazine with its long record of clean health, it can get the EPA to prohibit anything.”