SEATTLE — Three schoolteachers in Washington state who sued chemical company Monsanto over exposure to materials in fluorescent lights have been awarded $185 million.The law firm that represented the teachers, Friedman Rubin, said a jury returned the verdict Tuesday in King County Superior Court. The teachers, who worked at the Sky Valley Education Center in Monroe, Washington, said they suffered brain damage from exposure to polychlorinated biphenyls, or PCBs, in the fluorescent lighting at the school.“This is …