Feb. 3, 2025 — Long-term exposure to PM2.5, PM10, NO2 and ozone (O3) air pollution is associated with more hospital admissions for lower respiratory tract ... Jan. 7, 2025 — If you like the ...

In the stratosphere, ozone acts as a protective layer. But in the troposphere, at ground level, this colorless gas is incredibly harmful to human health and the environment in ways scientists are ...

Now new research indicates they are battling rising levels of another life-threatening pollutant—surface ozone. "Surface ozone is a toxic gas that not only affects public health but also impacts ...

Your tax-deductible donation helps make it all possible. The forgotten story of the hole in the ozone layer - and how the world came together to fix it. The scientists and politicians who ...

The findings of Ravishankara and colleagues 3 have re-opened the debate on how best to safeguard the ozone layer. Calculations of nitrous oxide emissions, their attribution to specific sectors ...

Ozone exposure early in life raises the risk a child will develop asthma and wheezing by age 4, a recent analysis found. The study, published in JAMA Network Open, analyzed data on 1,188 children ...

Ozone is a naturally occurring molecule. An ozone molecule is made up of three oxygen atoms. It has the chemical formula O 3. The ozone layer is the common term for the high concentration of ozone ...

Senior writer John Oehser answers your questions.

The use of these chemicals is controlled by the Montreal Protocol on Substances that Deplete the Ozone Layer (the Montreal Protocol). There are other ozone depleting substances, but their ozone ...

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