Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...
Radio Free Europe/Radio Liberty1y
How The U.S. Claimed Vast New Arctic Territory -- In An Unusual Way
As competition for resources in the Arctic Ocean intensifies ... the international rush to map out claims to the seabed into high gear. Last month, the United States planted its own figurative ...