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In coming decades, the shifting terrain that accompanies the warming of the permafrost caused by climate change will put most human-made structures in the Arctic at risk. Nearly 70 percent of the infrastructure in the Northern Hemisphere's permafrost regions—including at least 120,000 buildings and nearly 25,000 miles of roads—are located in areas with high potential for thaw of near-surface permafrost by 2050, according to new research. Quotes Merritt Turetsky: "I am writing a eulogy for the ecosystem that I love. The permafrost has been there for thousands of years in some places, and it will never come back."

Permafrost contains microbes, mammoths, and twice as much carbon as the atmosphere. What happens when it starts to thaw? Merritt Turetsky weighs in.

The ground, typically moist from snow this time of year, was dry and flammable as a result of unusually warm temperatures and a lack of precipitation in recent months, said experts including INSTAAR snow hydrologist Keith Musselman.

Redpolls, an Arctic-dwelling finch that flies south only sporadically, all share a characteristic red marking on their heads. But some redpolls are white with small bills, while others are larger and have whiter bills. Due to these differences, scientists initially thought that there were three different species of redpoll. However, new genetic research led by CU �鶹ӰԺ and including INSTAAR Scott Taylor has found that these apparently different species are in fact the same, but have a “supergene” that controls differences in morphology and plumage color.

New research from CU �鶹ӰԺ confirms that there are not, in fact, multiple species of Redpoll Finches, as previously thought. Instead, the three recognized species are all just one with a “supergene” that controls differences in plumage color and morphology, making them look different.

The National Science Foundation has awarded a highly competitive grant to a team of scientists building OpenEarthScape, a set of models and simulations to help anticipate changes in river flow, beach erosion, landslides and more. The $2.56M grant will support five years of work by earth surface scientists, including modelers, who are determined to better understand the forces that re-shape our landscapes over hours to epochs. Eric Hutton, Albert Kettner, Irina Overeem, Mark Piper are co-PIs on the grant.

A first-of-its-kind study by Garrett Rue and Diane McKnight suggests that warmer weather and less snowpack are causing higher concentrations of rare earth elements in the river.

Hotter, drier mountains leach more metal into streams from abandoned mines and natural deposits, finds a study by INSTAARs Garrett Rue and Diane McKnight.

But the window for discovery is slender and shrinking. Craig Lee's ice patch archaeology is mentioned.

With the help of strong ocean currents, mountains on the floor of the Southern Ocean play a key role in bringing dissolved carbon to the surface, where it can be released to the atmosphere, a new study led by �鶹ӰԺ scientists finds. The study led by Riley X. Brady and Nicole Lovenduski is the first to detail how carbon travels within and escapes from the Southern Ocean—and has implications for global climate change.