wjz-13 all-news-99-1-wnew 1057-the-fan 1300logo2_67x35
FIRST WARNING WEATHER: Freeze Warning, Freeze Watch  Current Conditions | Video Forecast | Radar

Jim Crawford

(Credit: courtesy of NASA)

NASA Begins Air Quality Study Flights Over Md./D.C.

Using a large plane to fly low over Maryland, NASA has begun a first of its kind study of air quality.