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 2:23 100 dogs need new homes by Dec. 31 4:14 Table for 4: Favorite holiday treats 1:30 Local Virginia pet pantry helps feed animals in need 5:45 And Scene: sketching the biggest stories of 2024 2:25 Chef, volunteers hand out hot meals on Christmas