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

The jet stream, one of the most dramatic forces of nature, was discovered during World War II when aviators first tried to cross the Pacific. This strong wind current is often defined as upper ...

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens ...

BASICALLY, ALL JANUARY LONG HAS BEEN FOR THESE SHOTS OF COLD AIR TO COME IN OUT OF SOUTHERN CANADA, AND THAT HAS KEPT THE JET STREAM WELL TO OUR SOUTH. IT’S KEEPING THE STORMS AT BAY AS WELL.

The jet stream, a fast-flowing, narrow air current, can dramatically affect flight times when they align with aircraft routes. Wow! According to data from flightradar, BA274 flying Las Vegas to ...