Solid particles and liquid droplets in the air come in a range of sizes, but those smaller than 2.5 micrometers pose the greatest risk to human health.
Published Nov 9, 2010
During one day in August, tropical cyclones, dust storms, and fires spread tiny particles throughout the atmosphere.
Published Aug 24, 2018
Kaufman served as program manager for NASA’s Earth Observatory from its launch in April 1999, through January 2006.
Published Jun 8, 2006
New research shows that the amount, size, and source of aerosol particles hovering in the air over India changes by season.
Published Nov 24, 2010
Nearly half of the aerosols in the air over North America have sources in other countries. The vast majority of it is dust from Asia.
Published Aug 3, 2012
This global map shows the concentration of aerosols in the atmosphere in March 2010, revealing the intensity of a large African dust storm and smoke and dust over Asia.
Published Apr 7, 2010
