A new NASA map of the planet lays out the depressing geographies of smog and premature death.
A tremendous eruption this Sunday on Mount Sakurajima delayed trains and turned streets as dark as night.
Huge wildfires, aggravated by a bad drought, are sending acrid clouds of smoke into nearby cities.
The results of a microbial analysis.
We hate to disappoint, but banning BBQ won't do much.
How does England's air quality compare to that of past hosts, and could it affect athletes?
The farming communities of the Central Valley breathe some of the worst air in the nation
Air quality continues a downward slide worldwide, according to the World Health Organization