Washington DC June 15, 2023 5:14 pm Special cars testing air quality in three DC neighborhoods Washington, D.C., launched a pilot program Thursday aimed at measuring air quality in specific neighborhoods. News4’s Mark Segraves explains how it works. Local 3:16 Nationwide port workers strike continues for 2nd day 4:15 National Zoo conservation biologist talks pandas in the wild, in DC 2:31 Jury in Tysons police shooting trial sent home after being shown video they weren't supposed to see 2:27 Family remembers Maryland man killed in double homicide 2:51 Thousands of tickets issued from speed cameras along Route 210