BISMARCK, N.D. — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the Eastern U.S ...

After hours: February 19 at 5:01:06 PM EST Loading Chart for POLA ...

NSIDC's Polar Stereographic Projection was originally designed to be optimal for sea ice applications, though it is now used for many other products. Northern Hemisphere (left) and Southern Hemisphere ...

Clip • 1 Hr 20 Mins • 19 APR 20 • Mystery Train with John Kelly ...

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