A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...
The Arctic Ocean (Figure 1), the smallest of the world's five major oceans ... New grid of Arctic bathymetry aids scientists and map makers, Eos Trans., 81(9), 89, 93, 96 (2000).
Millions are bracing for subzero wind chills this weekend as the coldest air of the season hits most of the country. The ...