The coldest air of the season – by far – will dive down from Canada, bringing dangerously cold temperatures to millions this week. Temperatures will drop so low in some places that frostbite could begin in as little as five minutes on exposed skin. Temperatures are already cold to start the week a...

Good morning. As winter arrives in Ukraine, sleet and snow will become a daily fact of life. Depending on the severity of the weather, the ground will become impassably muddy, or freeze over. Civilians in parts of the country will be left without power, heating or water as a result of Russian attack...