There are all kinds of impurities from industrial activities like manufacturing and transportation that can poison the air. The smallest seem to be the most sinister.
Particles called PM2.5, which come from burning fossil fuels, in...
pollution
Urban children are playing in toxic dirt
Decades of build-up have left invisible mountains of lead in America’s urban centers, including Santa Ana, California. A ThinkProgress investigation.Artwork by Diana Ofosu
During a routine visit to the doctor several years ago, Maria Vasquez was given the alarming news that her youngest son, Ulises, had lead in his blood, and one of the first questions the concerned mother asked the pe...