Starting Feb. 6, 2020, California growers will be barred from using the insecticide chlorpyrifos on grapes and other crops. AP Photo/Eric Risberg Gina Solomon, University of California, San Francisco January 23, 2020 – Editor’s note: California, the top U.S. food-producing state, is ending use of chlorpyrifos, a pesticide associated with neurodevelopmental problems and impaired brain […]