The levels of the crucial heat-trapping gases in the atmosphere reached historic highs last year, growing at near-record fast paces, according to the U.S. National Oceanic and Atmospheric ...

Smoke billows from a large steel plant on Nov., 4, 2016, in Inner Mongolia, China. Over the industrial era, the amount of carbon dioxide in the atmosphere has increased by about 40%, according to the ...

For the first time, measurements of atmospheric carbon dioxide (CO 2) taken at Mauna Loa Observatory in Hawaii exceeded 400 parts-per-million on an hourly basis. It's a symbolic benchmark, but an ...

This plant (left), found along the slopes of Mount Everest, grows in individual layers (right) that have been used to understand how atmospheric mercury levels have changed in the past 40 years.

Mercury pollution levels in the Earth’s atmosphere have spiked by seven times since the modern era began around 1500 CE, new research shows. The work, published as a study in the journal Geophysical ...

Scot Miller is an assistant professor in Johns Hopkins University's Department of Environmental Health and Engineering whose research focuses on greenhouse gas emissions and air pollution. His ...

For the first time, researchers have detected a significant dip in atmospheric levels of hydrochlorofluorocarbons — harmful gases that deplete the ozone layer and warm the planet. Almost 30 years ...

Carbon dioxide levels in the atmosphere rose by a record amount to new highs in 2024, locking in yet more long-term global warming, UN experts have warned. The annual update by the World ...