Located in the stratosphere, the ozone layer blocks potentially harmful ultraviolet energy from reaching our planet's surface.

Just in time for the official beginning of ozone season in Colorado, Larimer County now has its first Loveland air quality monitoring station.

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

Located in the stratosphere, the ozone layer blocks potentially harmful ultraviolet energy from reaching our planet's surface.

Located in the stratosphere, the ozone layer blocks potentially harmful ultraviolet energy from reaching our planet's surface. What's the status of the hole discovered 40 years ago?

Ozone Action Days are called when the Air Quality Index is forecast to reach unhealthy levels due to a combination of ozone, wildfire smoke and other pollutants.

Located in the stratosphere, the ozone layer blocks potentially harmful ultraviolet energy from reaching our planet's surface.

Ground-level ozone concerns prompt air quality alert in Minnesota The Minnesota Pollution Control Agency says ozone is the main concern that is triggering an air quality alert on Monday.

While this project is very thorough, [Hyperspace Pirate] himself admits the extreme dangers of high ozone levels, even getting close enough to LD50 levels for worry throughout out his room.

The international space industry is on a growth trajectory, but new research shows a rapid increase in rocket launches would damage the ozone layer.

Dallas-Fort Worth is among the most ozone-polluted metro areas in the U.S., according to new data from the American Lung Association. The 26th annual State of the Air report, released Wednesday ...

A new report from the American Lung Association shows that Phoenix's ozone problem is worsening, while its particulate pollution remains high.