While particulate matter air pollution from human activity in transportation, households and industry is decreasing in Europe ...
A large plume of Saharan dust is moving across the Atlantic Ocean toward the U.S. Gulf Coast. The dust can cause hazy skies, ...
Wildfires in Canada are pouring thick clouds of smoke into the US and will usher in unhealthy air quality for millions of ...
Methane (CH4) is a potent greenhouse gas whose concentration in the atmosphere has risen sharply in recent decades. Wetlands ...