Greenland ice sheet melting has started early

By Peter Hannam
Updated April 30 2016 - 5:33am, first published 4:56am
The early-season melting of Greenland ice has scientists worried. Photo: Daniel Beltra, via Catherine Edelman Gallery (Chicago)
The early-season melting of Greenland ice has scientists worried. Photo: Daniel Beltra, via Catherine Edelman Gallery (Chicago)
Meltwater flows along a glacial river on the Greenland ice sheet last July. Photo: New York Times
Meltwater flows along a glacial river on the Greenland ice sheet last July. Photo: New York Times