FILE - In this Feb. 21, 2017, file photo, Environmental Protection Agency (EPA) Administrator Scott Pruitt speaks to employees of the EPA in Washington. Federal scientists have determined that a family of widely used pesticides poses a threat to dozens of endangered and threatened species, including Pacific salmon, Atlantic sturgeon and Puget Sound orcas. The National Marine Fisheries Service issued its new biological opinion on three organophosphate pesticides _ chlorpyrifos, diazinon and malathion _ after a years-long court fight by environmental groups.Pruitt in March reversed an Obama-era effort to bar the use of chlorpyrifos on fruits and vegetables after peer-reviewed academic studies found that even tiny levels of exposure could hinder the development of children's brains. (AP Photo/Susan Walsh, File)
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