Impacts

Is declining sea ice changing the atmosphere?

Although Arctic sea ice extent did not set a low record this year, it’s still clear that there is less sea ice than there used to be. Scientists are keeping a close eye not only on the dwindling...

The ebb and flow of glacial lakes

The Quelccaya Glacier in Peru is the largest glacier in the tropics. This glacier provides water to the city...

A thawing, rotting Arctic?

Permafrost thaw causes the ground to become unstable as the soil collapses. This can damage building and roads...

Are icebreakers changing the climate?

On July 20, 2011, the U.S. Coast Guard Cutter Healy traveled through a break in the sea ice and melt ponds in...

Greenland’s glaciers and the Arctic climate

These before-and-after photographs show Petermann Glacier in July 2009, before the calving event, and again in...

Sea ice and the Arctic coast

Like many villages along the Arctic coast, the Inupiaq village of Shishmaref, Alaska, is increasingly threatened by...

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