Ancient Glaciers Still Affect The Shape Of North America, Say Scientists

Ancient Glaciers Still Affect The Shape Of North America, Say Scientists: "Long after the disappearance of the glaciers that once covered much of North America, the land they rested upon is still recovering from their weight - and the slow movement of this recovery includes horizontal motion never seen before, say Purdue scientists. The research team, led by Eric A. Calais, has found that a large swath of territory in the Northeast is slowly moving southward in relation to the rest of the continent."