Greenland's rock underbelly exposed
Scientists have stitched together decades of survey data to show what Greenland looks like without its ice cover.
The new map reveals a hidden world of mountains and canyons.
Dr Mathieu Morlighem from the University of California at Irvine, US, was a key figure behind the venture. He spoke with our science correspondent Jonathan Amos.
14 Dec 2017
- From the section Science & Environment