Media are invited to a NASA media teleconference 1 p.m. EDT Wednesday, April 5, to discuss the upcoming launch of the first space-based instrument to observe major air pollutants across North America every hour during the daytime. Media are invited to a NASA media teleconference 1 p.m. EDT Wednesday, April 5, to discuss the upcoming launch of the first space-based instrument to observe major air pollutants across North America every hour during the daytime. Read More