• From PRI's The World

The World's Carolyn Beeler reports on her latest dispatch from a research trip to Antarctica. Climate change researchers aboard the icebreaker Nathaniel B. Palmer sent a robotic submarine for the first look ever at the seafloor under the massive Thwaites Glacier.

Crew raise the HUGIN autonomous underwater vehicle onto the desk of the N. B. Palmer after a successful deployment. Photo credit: Linda Welzenbach