NOx, shorthand for the sum of NO2 + NO, is necessary for the formation of ozone (O3). Even when volatile organic compounds (VOC) are not present, ozone is formed through a series of sunlight-driven ...

MOLINE, Ill. — You've likely heard about the ozone layer at some point or another. But, did you know that there are two types of ozone? Let's dive in! Ozone is formed when you pair three oxygen ...

Breathing ozone can damage human health even at low levels, harming airways and exacerbating respiratory illness. It is also bad for plants, making their leaves yellow and wilt. But when formed at ...

In the 1980s, the ozone layer — or lack of it — loomed large in the public imagination, as scientists warned its continued destruction could be catastrophic for humanity and the planet. It led ...

Data shows how ozone is more than just a pollutant, but also may be playing a significant role in climate change.

Dr. David Persse explains why ozone action days and ozone pollution levels are considered unhealthy for some, and how people can protect themselves.

The 2015 Antarctic ozone hole area was larger and formed later than in recent years, said scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). On Oct. 2, 2015, the ...