Emissions of nitrous oxide, the third most important human-made greenhouse gas, rose 40 percent from 1980 to 2020, according to a new report by the Global Carbon Project.

Edinburgh, no stranger to an occasional haze, experienced an unprecedented atmospheric event on 31 May, unlike any seen in over 30 years.

When soil microbes eat plant matter, the digested food follows one of two pathways. 

A new study finds that more than 50,000 Californians died from exposure to wildfire smoke over a little more than a decade.

In early May, the neurotoxic effects of the heavy metal mercury made news when outlets reported that 2024 U.S. presidential candidate Robert F. Kennedy Jr. said in 2012 that he experienced cognitive issues such as memory loss due to mercury poisoning, likely from a diet heavy in tuna.

Scientists have found in leafy vegetables traces of several chemicals used to prevent the aging and corrosion of car tires.

New research from the University of Illinois Urbana-Champaign has linked multiple types of per- and polyfluoroalkyl substances (PFAS, also known as “forever chemicals”) with increased risk of cardiovascular diseases in postmenopausal women. 

Car tires contain hundreds of chemical additives that can leach out of them.

A new study finds climate change is likely to make upward spikes of ozone at ground level worse by 2050, which could result in many parts of the United States falling out of compliance with air quality standards and increasing risks to public health.

Methane is a climate “super pollutant,” causing 30 times more warming per ton than carbon dioxide.