How California's improving air quality is putting a dent in the region's dangerous fog
April 24, 2019, 1:41 p.m. by Mary Jo DiLonardo
The dense fog has dropped 76% in recent years.
Rare weather phenomenon triggers air-quality alerts in D.C.
February 7, 2019, 11:12 a.m. by Michael d'Estries
A 'capped inversion' trapped air pollutants near the ground.
More than 95% of the world's population is breathing unsafe air
December 7, 2018, 11:36 a.m. by Noel Kirkpatrick
Air pollution falls behind high blood pressure, smoking and poor diet as a leading cause of death.
These 10 cities are embracing 100% renewable energy
September 15, 2018, 8:14 a.m. by Matt Hickman
St. Louis, Orlando and Norman, Oklahoma, have more in common than you might think.
NASA brings 'aerosol Earth' into mesmerizing color
August 28, 2018, 8:12 a.m. by Noel Kirkpatrick
This NASA image highlights wildfires, hurricanes and dust storms to show off the Earth's air quality.
The worst everyday air pollutants and what they do to our bodies
July 9, 2018, 12 p.m. by Katherine Butler
Here's how some of the most common air pollutants are created and the effect they have on our health.
Rap star Nelly has been quietly sending 2 kids to college every year for a decade
'Super mom' spotted on a Minnesota lake — with 56 ducklings in tow
Tortoise 'marriage' ends after 115 years
Photographer captures stunning image of eagle in symmetrical reflection
The lost towns under Lake Murray
Costa Rica has doubled its forest cover in the last 30 years