Greenland ice sheet could fully melt after reaching specific tipping point, study finds

Greenland's ice sheet currently spans over 1.7 million square kilometers and is the largest freshwater reservoir in the northern hemisphere. The ice sheet has already lost over a trillion tonnes of its total mass since the 1980s, with melting rates six times higher in the last decade. Indeed, a recent study found that an average of 30 million tonnes of ice is now being lost every hour.