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Scientists have been watching with alarm as the world's glaciers and arctic regions are showing more and more signs of melting. They suspect that global climate change -- fueled by industrial and vehicle emissions -- are to blame. But as NPR's Eric Niiler reports, this arctic thaw is also revealing a trove of ancient artifacts from people who dropped them thousands of years ago.

Three years ago, a huge section of an Antarctic ice sheet broke off and floated away. Now scientists have had a chance to look at what was under the shelf and have discovered huge mats of bacteria and clams. It's a cold seep, a rare phenomenon where methane bubbles up from under the seabed, and the first found in the Antarctic.

Greenland is covered in an ice layer that's up to 2 miles thick. But below the ice, there's a vast terrain of bedrock. Now scientists have found a mega-canyon there, twice the size of the one in Arizona. The hidden canyon is drawing oohs and aahs from scientists around the world.

Residents haven't heard the tell-tale sound of summer since the '70s, when the city council banned the trucks.

By Catherine Cuellar, KERA 90.1 Reporterhttp://stream.publicbroadcasting.net/production/mp3/kera/local-kera-483320.mp3Public Murals by Local High School…

Immigrants around the country have staged hunger strikes over the past month to protest conditions inside detention facilities, prompting officials to…

Turin gold medal winners Joey Cheek and Chad Hedrick started out as inline skaters before moving to the ice. It's a trend in speed skating these days, but one that wasn't initially welcomed by the sport's traditionalists.

As California officials oppose the Trump administration's immigration crackdown, they wonder how far they can push. A legislator introduced a bill to not allow local authorities to work with ICE.

Scientists have developed a new type of refrigeration system for Ben and Jerry's. It chills ice cream using sound waves, rather than with gases that may contribute to climate change. The "thermo-acoustic" chiller is a pricey prototype, but its creators hope the device can be produced for the commercial market. NPR's Robert Smith reports.

Immigration raids in California, Virginia, North Carolina, Georgia, Kansas, New York and Texas have immigrant rights groups saying federal officials are cracking down, but ICE says it's not unusual.