Step right up on the scale, Greenland

Here's a guy with a pretty cool job.

Scott Luthcke, who works at NASA's Goddard Flight Center in Maryland, weighs Greenland every 10 days using a sophisticated satellite-based system.

According to this and other systems, it has been learned that Greenland is losing an average of about 183 gigatons, roughly 200 cubic kilometers of ice, a year. This is equivalent to about half the volume of Lake Erie.