Related topics: nitrogen

Remote work may be keeping some cities' air cleaner

In the spring of 2020, COVID-19-related restrictions in the United States led to reductions in nitrogen oxide (NOx) emissions because of the sudden drop in road traffic. But even after restrictions were lifted and the flow ...

UN health agency sets higher, tougher bar for air quality

The harmful health effects of air pollution kick in at lower levels than previously thought, the World Health Organization said Wednesday as it set a new standard for policymakers and the public in the first update of its ...

UN: Brief gains in air quality in 2020 over COVID lockdowns

The U.N. weather agency says the world—and especially urban areas—experienced a brief, sharp drop in emissions of air pollutants last year amid lockdown measures and related travel restrictions put in place over the coronavirus ...

Scientists analyze how the pandemic affected air quality

The coronavirus pandemic has changed the way we live, and several studies have documented how those widespread changes in human behavior have impacted the environment. NASA scientists and others using data from NASA and our ...

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