Arctic air

John Reardon in Arctic Air

The polar vortex, the often hyped weather feature that typically keeps frigid, Arctic air nestled close to the North Pole during winter, has broken down into 3 pieces. It's spilling cold air out of the Arctic like a leaky faucet and spawning intense winter storms in parts of the U.S. and Europe in particular.

Russia’s military presence on Kotelny Island off the northern Siberian coast demonstrates a complex, layered coastal defense arrangement which could limit NATO and U.S. air and maritime capabilities in the region.

Quick facts, basic science, and information about snow, ice, and why the cryosphere matters The cryosphere includes all of the snow and ice-covered regions across the planet.

(all images)-click- then right click for 'original'

Tailor-make your own itinerary in Iceland, where you to decide where to stay, for how long and what type of rental car.

Old Man Winter will be unrelenting across the Northeast and Midwest this week as yet another blast of arctic air dives into the regions. This next push of arctic air is expected to bring air that is just as cold, or even colder than the air that...

The Air Force released its first Arctic Strategy ever this summer, and the service's special operators were "really excited" to hear it.

The UK and the US have been struck by Arctic conditions in recent days.

John Reardon and Pascale Hutton in Arctic Air (2012)