We’ve all heard it: Arctic sea ice is melting. Sea ice is thinner year to year and there is less of it. In 2007, scientists observed a nearly 50 percent loss of summer ice as compared to 1980....

In recent years with sharp summer sea ice decline, the Arctic seems more sensitive to climate warming than elsewhere on Earth. But are other frozen features of Earth changing too? Notably, most of...

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...

In the Rocky Mountains, as in many mountain ranges worldwide, snowpack is getting dirtier. Winds carry fine sediment particles from arid regions, and dust lofted high enough into the atmosphere...

Climate models, also known as general circulation models or GCMs, use computers to simulate Earth’s climate. Scientists use climate models to predict weather, but unlike weather forecasts, the...

Satellites have continuously monitored Earth’s polar regions since November 1978. Over that period, Arctic sea ice has declined. Compared to the 1981 to 2010 average, sea ice extent has declined...