Greenland and Antarctic ice sheets experience 'devastating' melt.

The Greenland and Antarctic ice sheets are losing more than three times as much ice a year as they were 30 years ago, according to a new study. The combined melt soared to 410 billion tons a year from 2017 to 2020, more than two-thirds of it from Greenland. The study found that Earth has lost 8.3 trillion tons of ice from the two ice sheets since 1992, enough to flood the entire United States with 33.6 inches of water or submerge France in 49 feet. The melt from ice sheets has gone from contributing 5% of the sea level rise to now accounting for more than one-quarter of it.