The Annual Greenhouse Gas Index is updated each spring after nearly all the air samples collected during the previous year have been obtained and analyzed.

New insights into how phytochromes help plants sense and react to light, temperature

Rich in quartz, limestone, and algae, the Great Lake is also rich with seasonal color.

New research shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood.

Because of anthropogenic emissions of oxides of nitrogen (NOx), the NOx deposition rate is about five-fold greater than that of pre-industrial times largely due to energy production and biomass burning.

New research shows that this type of wildfire—which can survive the winter to re-emerge in spring—is becoming more common in high northern latitudes as the climate warms.

Heat from the Atlantic Ocean carried to higher latitudes is causing the edge of the sea ice to retreat.

Yellowstone National Park is famous for harsh winters but a new study shows summers are also getting harsher, with August 2016 ranking as one of the hottest summers in the last 1,250 years.

A large-scale research project at the University of Alaska Fairbanks Geophysical Institute has revealed insight into the relationship between surface debris on glaciers and the rate at which they melt.

Researchers have detected groundwater beneath a glacier in Greenland for the first time using airborne radar data.