Ozone

Ground-level ozone arises when emissions from vehicles, power plants and other sources react to sunlight.

State regulators were able to show that because of people buying new cars, emission levels will keep dropping even without testing to document it.

Ozone pollution in St. Louis has slightly improved, according to the 2018 State of the Air report released this month by the American Lung Association.…

The Missouri Department of Natural Resources proposes spending the $41 million it received from the Volkswagen settlement last year on replacing school…

A report released Monday finds that two power plants in Arkansas are partly responsible for poor air quality in St. Louis. Scientists from…

The St. Louis metro area has one of the worst smog levels in the country. In recent years, ozone levels have declined, but the region must comply with…

There's good ozone and there's bad ozone. The good kind sits up high up in the stratosphere, protecting us from the sun's ultraviolet rays. The bad kind…

Since last fall, when the Environmental Protection Agency announced plans for an administrative rule to tighten standards on “ground-level ozone,” better…

Sen. Roy Blunt, R-Mo., and Missouri business leaders, oppose what some have labeled as the Obama administration’s “most expensive regulation ever.” The…

Cutting carbon dioxide emissions from power plants would also reduce other types of air pollution, both here in Missouri and nationally.That's according…