Air pollution has become a fact of modern life, with a majority of the global population facing chronic exposure.

hen wildfire smoke filled the skies of Oregon’s southern Willamette Valley in 2018, many residents kept their doors closed and windows shut, thinking they were safe from polluted air.

The devastating southeastern Australian bushfires that started last September spewed smoke and aerosols higher into the atmosphere than some Earth-observing instruments have ever measured.

Smoke from wildfires and agricultural burning has an important role in regulating climate.

More than 1,000 bottlenose dolphins live in the Indian River Lagoon year-round.

We have transformed the night-time environment in a very short time, relative to evolutionary timescales. 

Colorado State University Distinguished Professor Sonia Kreidenweis and her research group identified an atmospheric region unchanged by human-related activities in the first study to measure bioaerosol composition of the Southern Ocean south of 40 degrees south latitude. 

Plants drink up much of the water that falls to Earth. 

Man’s best friend may also be man’s best bet for figuring out how environmental chemicals could impact our health.

Climate change is altering the age and structure of the world’s forests, driving an increase in younger and shorter trees over the last century, according to a new study published in the journal Science. Since 1900, the world has lost more than a third of its old-growth forests.