More than half the Arctic's coastline is Russian territory and in the last six years Moscow has built more than 475 military ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

"The most climate-stressed regions all contained permafrost, which is vulnerable to thaw as temperatures rise," researcher Sue Natali said.

Below is a look at the latest wind chills showing where the heart of this arctic blast is located now. ( MAPS: Forecast Highs And Lows) Frigid temperatures continue midweek: The peak of the ...