Cold weather warning may affect at-risk health groups.

Cold warning

Man discovers group of turtles frozen under ice in pond

Video shows skier getting swept up in an avalanche at Banff National Park

Why you need to clear these snow-covered vents outside your home

Huge wave smashes mayors livestreaming during Cyclone Harry

Exploding trees? You won’t believe what cold does to them

Campers buried as landslide hits campground without warning

TRACKING: Potential 'weather bomb' on Canada's East Coast

SEE IT: Niagara Falls partially freezes over after days of bitter cold

No escape: Florida, Caribbean face 'rare' Arctic blast, cold

Mark your calendars! Total lunar eclipse, or 'Blood Moon', arrives soon

Officials remove staggering 100,000 pounds of invasive fish from river

Atomic scientists set 'Doomsday Clock' closer to midnight than ever

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