Traveling just over 6 mph would hardly break any speed record. But for a glacier, it is a pace that is considered unprecedented.
In fact, the summer speed of Greenland’s Jakobshavn Glacier, according to a new study published by The Cryosphere, has more than quadrupled its summer speed since the 1990s. The study claims that the glacier, which is believed to have spawned the iceberg that sunk the Titanic, set speed records faster than any previously recorded for glaciers or ice streams in both Greenland or Antarctica.
On July 8, NASA satellite imagery showed about 40 percent of Greenland’s top ice layer intact. By July 12, only four days later, 97 percent of the ice had melted. Margaret Warner asks NASA’s Thomas Wagner for scientific explanation of the massive thaw. Continue reading
Residents of Greenland’s west coast say they are feeling the effects of rising sea temperatures in the fishing and tourism industries. NewsHour correspondent Spencer Michels reports on the research into whether the changes are climate change-related. Continue reading