A significant amount of ice has melted from glaciers in Greenland and Antarctica since 1979. The total amount of ice lost is approximately 12.5 trillion tons, which is enough to cover the continental United States in a layer of ice 5 feet deep. This melting is attributed to a warming Earth, with most of the melt caused by warmer waters rather than hotter air.

The ice sheets are melting at a rapid pace, according to a study published in Scientific Data. This has implications for future sea level rise. Further details on the study and its findings are available.