A citizen science project finds elevated nitrogen dioxide in 65 percent of DC and Maryland home kitchens it tested. Nitrogen dioxide in homes comes from natural gas combustion in cooking stoves and is known to cause asthma. Sunil Dasgupta spoke with Barbara Briggs of Beyond Gas, a local climate group which organized the testing, Montgomery Village community leader Djamila Bah, a testing volunteer, and physician Janet Phoenix of the George Washington University School of Public Health. Report: https://t.ly/gyvqq Music from Washington DC rock ‘n’ roll band 7 Door Sedan.