"The federal government's top fisheries experts say that three widely used pesticides — including the controversial insecticide chlorpyrifos — are jeopardizing the survival of many species of salmon, as well as orcas that feed on those salmon.

It's a fresh attack on a chemical that the Environmental Protection Agency was ready to take off the market a year ago — until the Trump administration changed course.

Chlorpyrifos is widely used by farmers to protect crops like strawberries, broccoli and citrus fruit from insect pests. In recent years, though, scientists have found evidence that exposure to chlorpyrifos residues can harm the developing brains of small children, even in the womb."

Dan Charles reports for NPR January 11, 2018. [2]