Now in its fourth year, IceBridge's return to the Antarctic comes almost a year after the discovery of a large rift in the continent's Pine Island Glacier. Keep up with the researchers at the IceBridge blog!
To mark Earth Day 2012, we are inviting you to create your own compelling video vision of NASA's exploration of Earth. You could be selected to view the launch of an upcoming Earth science mission in person! Deadline is May 31, 2012.