High above the oceans and landmasses, an unseen migration is constantly unfolding. These travelers are aerosols: millions upon millions of microscopic particles so small they can drift for days or ...

Aerosols, small particles in the atmosphere like salt and dust, may offset a third of human-caused climate warming, though their influence is fading.

George Washington signed letter dated February 20, 1790, addressed to a state governor, possibly North Carolina state governor Alexander Martin. O ...

For most of the past decade, forecasters have been able to use satellites to track these smoke plumes, but the view was only ...

Plumes of dust often travel thousands of miles from Africa to the Americas. The peak activity happens between June and ...