NASA's autonomous, solar-powered explorer GROVER has been kitted out with ground-penetrating radar to take to Greenland's ice sheet on Friday. There the robot will spend a month analyzing the accumulation of snow and how this contributes to the ice sheet over time. The scientists involved hope to identify a new layer of ice that has formed since summer 2012, an unusually warm summer which saw melting across 97 percent of the area of the ice sheet. During that time, an iceberg twice the size of Manhattan calved from the Petermann Glacier, part of the ice sheet.
Read the full article: NASA's GROVER roves over snow for over a month