NASA reveals images of recent Arctic study
Started in 2009, Operation IceBridge, NASA's longest-running airborne mission to monitor polar ice change, has concluded another springtime survey of Arctic sea and land ice. The study found Arctic sea ice extent was second lowest on record in 2017. Twenty 8-hour flights between March 22 and May 2 mapped the western basin of the Arctic Ocean and Greenland's fastest-changing glaciers.