NBC News’ science section features recently published research led by geology professor Paul Bierman and his graduate student showing that, in central northwestern Greenland, near Baffin Bay, despite the island’s ice sheet advancing and retreating many times over the past 800,000 years, the local highlands, protected by "ghost glaciers," were never eroded by ice as other areas were. "There are indications that these rocks have been exposed and buried for many Ice Age cycles,” says grad student and lead author Lee Corbett, “(but) when the ice advanced over this area, it was essentially frozen to the bedrock below. It's not eroding or shaping the landscape." Read the story...