By collecting urban grime in cities, such as Syracuse, New York, scientists are showing how these molecules could affect chemical reactions.

If human societies don’t sharply curb emissions of greenhouse gases, Greenland’s rate of ice loss this century is likely to greatly outpace that of any century over the past 12,000 years, a new study concludes.

An international team of scientists that includes a USDA Forest Service scientist based in New Hampshire used tree rings to document how “Arctic dimming,” the interference with sunlight caused by extreme pollution such as that at an industrial complex in northern Siberia, is killing trees and possibly affecting how trees respond to climate change.

Millions of years ago, fire swept across the planet, fueled by an oxygen-rich atmosphere in which even wet forests burned, according to new research by CU Boulder scientists.

Exploring underneath glaciers and amidst open-ocean eddies is not your standard water cooler talk.

Alaska’s living reefs – which house an entire ecosystem – are collapsing thanks to climate change and the disappearance of sea otters, new research published in the journal Science reveals.

For just over two decades, students and post-doctoral researchers working with the University of Toronto’s Kimberly Strong and Kaley Walker have traveled to Eureka, Nunavut, in the Canadian High Arctic each spring to make unique measurements of atmospheric trace gases.

After decades of low water levels, two of Iraq’s popular lakes appear to be filling again.

Simultaneous heatwaves and droughts are becoming increasingly common in western parts of the United States, according to a new study led by researchers from McGill University. 

Surviving on a warming planet can be a matter of timing—but simply shifting lifecycle stages to match the tempo of climate change has hidden dangers for some animals, according to new research from the Max Planck Institute of Animal Behavior and Cornell University.