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.
More than 95% of the world's population is breathing unsafe air
April 18, 2018, 1:28 p.m. by Noel Kirkpatrick
Air pollution falls behind high blood pressure, smoking and poor diet as a leading cause of death.