CHICAGO (AP) – Researchers for the first time have linked air pollution exposure before birth with lower IQ scores in childhood, bolstering evidence that smog may harm the developing brain. Like this:Like Loading... Related Latest News High Wind Warning issued for Carson City, Carson Valley and Reno areas Carson City emergency crews called to crash at College Parkway and US-50 East Carson City deputies make arrests for DUI, felony marijuana possession Carson City Supervisor Curtis Horton announces re-election bid Photo: Sunrise over the Pine Nut Mountains from Dayton Carson City firefighters respond to structure fire at Carl’s Jr.