Frostbite can develop within minutes on exposed skin, especially with wind chill.
Arctic air over Manitoba leads to extreme cold warning for most of province
Extreme cold weather sweeps through parts of Canada, leaving thousands without power - The Globe and Mail
Canada's weather forecast: Cold, rain in some areas
It's so cold in parts of Siberia that eyelashes are freezing
Snow Friday: Winter Weather Advisory issued ahead of storm for parts of DC, Maryland, and Virginia
Science of Snow National Snow and Ice Data Center
Extreme cold grips Nordic countries, Russia as floods hit western Europe
Ice, Snow and Extreme Cold - Center for Disaster Philanthropy
Science of Snow National Snow and Ice Data Center
Environment Canada issues extreme cold warning for parts of B.C. near Alberta - The Northern View
Western provinces remain under extreme cold warning, wind chills dropping to -50 C - The Globe and Mail
Johannesburg, South Africa, gets first snow in more than a decade: 'It's just amazing
Weather Update: The Winter - Kemah Police Department
Bay Area weather: Freeze warning issued for parts of region
