Cracks in Greenland Ice Sheet Could Speed Melting, Sea Level Rise
"At its peak, one meltwater lake drained the equivalent of an Olympic-size swimming pool every three seconds."
"A cerulean lake consisting of glacial meltwater on the surface of the Greenland ice sheet, located about 18 miles from where the Store Glacier meets the sea in west Greenland, briefly became one of the world’s tallest waterfalls during the course of five hours in July 2018.