Contents

11 October 2019
Vol 366, Issue 6462

About The Cover

Cover image expansion

COVER Inside a tract of ice stranded as Greenland's Helheim Glacier retreated, meltwater cascades near Greg Hanlon, an engineer with the U.S. Army Corps of Engineers. Hanlon is part of a team studying how meltwater interacts with warm ocean currents to speed ice loss from Helheim and other glaciers draining Greenland's ice sheet. See page 170.
Photo: Adam LeWinter, U.S. Army Engineer Research and Development Center (ERDC) Cold Regions Research & Engineering Laboratory, Remote Sensing/GIS Center of Expertise