The Accelerating Retreat of Antarctic Ice Sheets.

A new study has found that parts of the Eurasian ice sheet retreated at a rate of up to 2,000 feet per day at the end of the last ice age, far outpacing the fastest-moving glaciers studied in Antarctica. The finding raises concerns about how quickly ice in Greenland and Antarctica could melt and raise global sea levels in today’s warming world. If air and ocean temperatures around Antarctica were to increase as projected, researchers say ice marching backward hundreds of feet in a day could trigger a collapse of modern-day glaciers sooner than previously thought.