An attempt by the U.S. Environmental Protection Agency to roll back federal limits on mercury emissions ignores important public health benefits, an economist at the Yale School of Forestry & Environmental Studies writes in a new paper. And it could set a dangerous precedent.

Offshore energy-producing platforms in U.S. waters of the Gulf of Mexico are emitting twice as much methane, a greenhouse gas, than previously thought, according to a new study from the University of Michigan.

A new study finds volcanic activity played a direct role in triggering extreme climate change at the end of the Triassic period 201 million year ago, wiping out almost half of all existing species.

Naturally occurring (geogenic) groundwater arsenic (As) contamination is a problem of global significance. It occurs in large parts of the alluvial and deltaic aquifers in South and Southeast Asia.

As the only alkaline gas in the atmosphere, ammonia can react with sulfur dioxide and nitrogen oxides to form secondary fine particles, accelerating the generation of atmospheric haze.

Over the past several weeks, NASA satellite measurements have revealed significant reductions in air pollution over the major metropolitan areas of the Northeast United States.

A European Union (EU) programme aimed at reducing carbon dioxide (CO2) emissions has made significant progress despite low prices in carbon markets, according to a study at the Universities of Strathclyde and Pittsburgh.

Results of Australian study may have impact on New York state carbon neutrality goals.

How can data from outer space be used to impact human health?

Tiny fragments of plastic waste are dispersed throughout the environment, including the oceans, where marine organisms can ingest them.