Massive Australian bushfires likely contributed to the large and persistent ozone hole in 2020.

The coronavirus pandemic has led researchers to switch gears or temporarily abandon projects due to health protocols or not being able to travel. But for Patrick Keys and Elizabeth Barnes, husband and wife scientists at Colorado State University, this past year led to a productive research collaboration.

Patients who have preexisting respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD) and live in areas with high levels of air pollution have a greater chance of hospitalization if they contract COVID-19, says a University of Cincinnati researcher.

One consequence of the coronavirus pandemic has been global restrictions on mobility.

Scientists, led by researchers at the University of British Columbia, have discovered three liquid phases in aerosol particles, changing our understanding of air pollutants in the Earth’s atmosphere.

When winter storms threaten to make travel dangerous, people often turn to salt, spreading it liberally over highways, streets and sidewalks to melt snow and ice. 

Nitrogen is an element basic for life — plants need it, animals need it, it’s in our DNA — but when there’s too much nitrogen in the environment, things can go haywire.

Respiratory disease increased markedly following one of Iceland’s largest volcanic eruptions, a new study has found.

A Texas A&M study shows weather events carried contaminated water to the Flower Garden Banks sanctuary off the Galveston Coast, much farther than expected.

Inland waters are an important component of the global carbon cycle and function as active reactors, transporting and transforming large quantities of naturally- and anthropogenically-derived carbon.