Imminent loss of NASA's Aura and Canada's SCISAT will severely diminish scientists’ ability to monitor ozone-depleting substances in the stratosphere.

India's cities are already ranked among the world's most polluted, based on concentrations of fine particulate matter in the air. Now new research indicates they are battling rising levels of another ...

Colorado health officials are admitting little progress in combatting toxic ozone and asking the EPA for a pollution downgrade that will buy the state more time.

Scientists recorded a total-column ozone concentration of 102 Dobson units, the 8th-lowest level since 1986.

Among the children studied, 12.3 percent had asthma at the time of their 4- to 6-year checkup and 15.8 percent had wheezing.

Senior writer John Oehser answers your questions.

Though we receive commission for sponsored additions, this has no bearing on our assessments of the subject. Layer 1 crypto projects serve as the foundation for the entire blockchain and ...

We work to improve air quality to protect the environment and human health.