SAN FRANCISCO, CALIFORNIA -- (By Lisa Strong-Aufhauser) Even the snow on top of the Greenland ice sheet is not as pure as you’d think. Dr. Joe McConnell from the Desert Research Institute in Reno, Nevada, studies the impurities...

CHICAGO, ILLINOIS-- Last time we saw Mark Fahnestock was in Greenland, as he was wrapping up his season's field work on the Jakobshavn Isbræ, one…

ILULISSAT, GREENLAND-- In this video, we talk with Jeaime Powell, a graduate student from Elizabeth City State University working on the Polar Grid project. After every twin-otter airplane flight made from Ilulissat to map the Greenland Ice Sheet, Jeaime and his colleagues check over the data...

ILULISSAT, GREENLAND-- We spent a lot of time at the Ilulissat airport, hopping on helicopters at every opportunity but also hanging out with the crew on an ice-mapping project out of the University of Kansas and NASA. In this video, we talk with Earl Frederick of NASA about the ice-mapping flights over the Greenland Ice Sheet...

KANGERLUSSUAQ, GREENLAND– Last week, we showed you a video interview with glaciologist Mark Fahnestock who described how he and his team are measuring the motion of the Jakobshavn Isbræ, one of the fastest-moving glaciers in the world. Here, Dr. Fahnestock describes the roar of a 1000-foot iceberg dropping off the Jakobshavn...

KANGERLUSSUAQ, GREENLAND-- We caught up with glaciologist Mark Fahnestock on his way back home after a few weeks camping near the Jakobshavn Isbræ, the most productive and among the fastest-moving glaciers in the world...

ILULISSAT, GREENLAND-- Lisa and I had just flown into the tiny Ilulissat airport and were told we were catching a helicopter ride that afternoon to…

KANGERLUSSUAQ, GREENLAND-- There are two theories about how Greenland was named, both having to do with the 10th century Vikings who first christened this gigantic Arctic island. One is that Erik the Red, having been banished from Iceland because of his murderous ways...

ILULISSAT, GREENLAND-- We were there for their first day of scouting near Kangerlussuaq, and had the chance to tag along with scientists Tom Neumann and Paul Bierman again on their last day of science in Greenland, recording this video dispatch...

ILULISSAT, GREENLAND-- Lisa and I were alone on the Greenland Ice Sheet while the scientists were doing helicopter surveys of the lakes. It was a gorgeous day when suddenly we heard more cracking and popping from the ice...