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Antarctica’s Thwaites Glacier is retreating rapidly as a warming ocean slowly erases its ice from below, leading to faster flow, more fracturing and a threat of collapse. The glacier is the size of Florida or Britain and currently contributes four percent of annual global sea-level rise.

Loaded with research equipment and ¶¶Òõ¶ÌÊÓƵ Boulder scientists, the RV Polarstern icebreaker is steaming towards the central Arctic, searching for the perfect parking spot next to an ice floe.

Hundreds of researchers from 19 countries are launching a yearlong journey to study Arctic climate.

Thick, impenetrable ice slabs are expanding rapidly on the interior of Greenland's ice sheet, sending meltwater spilling into the ocean.

Wildfire smoke can persist for months in the stratosphere, giving scientists an opportunity to fine-tune models of climate change, nuclear winter and geoengineering.

Now in its second year, the Earth Lab Data Analytics Graduate Certificate gives students the tools to study environmental topics such as air pollution, glaciers and flooding.

A CIRES study reveals the fate of indoor chemical emissions, including the unexpected buildup of lactic acid from human sweat.

Using cutting-edge instrumentation, CIRES researchers are able to track and differentiate sources of methane, a greenhouse gas and air pollutant.

CIRES scientists have directly observed an Antarctic ice shelf bending under the weight of ponding meltwater on top, a phenomenon that may have triggered the 2002 collapse of the Larsen B ice shelf.

Greenland is melting faster than scientists previously thought—and will likely lead to faster sea level rise—thanks to the continued, accelerating warming of the Earth’s atmosphere.