A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

Americans have been warned to brace for more winter storms as Arctic winds are set to dump more ice and snow amid freezing temperatures.

So how might this one stack up to the 2019 polar vortex that covered the region? While there are a few differences, the setup and potential impacts appear similar. Temperatures for West Michigan ...

The last polar mission from Florida launched in 1960 ... SAOCOM-1B was slated to follow with a launch in 2019 from Vandenberg. But then, earlier this month, an unexpected entry on a government ...

Then the polar bear appears. She’s big, maybe 500 pounds, trailed by a single cub. They’ve just jumped into a lead—a long fissure of open water in the frozen sea. In seconds they’re out of ...

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Following is a transcript of the video. The polar vortex is headed toward the US, expected to bring record-breaking cold to the Northeast, upper Midwest, and Great Lakes by this week. It's so cold ...