Just what exactly is permafrost? And what is happening now that it's warming up? To find out, we enter the Arctic Circle's secret world of ice and frozen history.

The storm that walloped Southcentral Alaska also left about 32 inches of snow in Moose Pass and 30 in Seward.

Four teams had scratched as of 7 p.m. Saturday because of the icy conditions, said Kuskokwim 300 race director Madelene Reichard. "It's the same thing for all of them," Reichard said. "The dogs aren't used to running on the ice, and people were wanting to keep their dogs healthy."

The «Baltic Winter» spent only about five and a half days on its voyage across the Northern Sea Route. Last year’s ice conditions in the area were favorable, Russian transport authorities say.

The weather was the warmest I’ve ever seen for this time of year and never seen insects like ladybugs out this time of year.

We've had so much wind this winter, on the 15th of January, the winds were warm!!!!!!

We will have more wacky weather in 2018 as the world continues to warm.

The ice road between Detah and Yellowknife is opening Friday, a date that ties a decades-old record.

How will climate change affect health in Alaska? Dangerous travel conditions could cause more accidents, warmer temperatures could spread new diseases and the topsy-turvy weather could worsen mental health. Those are some conclusions from a new state report released Monday. Listen now

The warm winter has made traveling on the river ice more hazardous than Bethel Search and Rescue ever remembers.

Photograph illustrates the impact of a rain-on-snow event during the winter of 2018.

The powerful winter weather storm was slamming into Massachusetts by mid-morning Thursday, bringing blizzard-like conditions in some areas, torrential rain in others, power outages and hurricane-strength winds on Cape Cod and the Islands.

Sled dog racing season officially began on the Kuskokwim this weekend. Listen now

A father’s body has been recovered from the Kuskokwim River after he and his family fell through a marked, open hole the night of New Year’s Eve. Bethel

While taking photos this afternoon of the snow ice on various objects near the Native Village of Unalakleet, which was on the approximate order of 4 minutes and with very little wind (playground, grass, powerlines), my hands were cold due to the "wetness" in the air and the ambient air temperature.

That hurts coastal communities that hunt on the ice. But colder weather may be coming, at least to some portions of Alaska.

That hurts coastal communities that hunt on the ice. But colder weather may be coming, at least to some portions of Alaska. Ice should be hugging the coast near the village of Gambell, perched on St. Lawrence Island in the Bering Sea, said Mayor Susan Apassingok, on Tuesday. But ice isn't there.

Winds of up to 85 mph ripped up the Southwest Alaska coast on Friday, upending smokehouses, tearing electric lines and flinging a house across the road.

Multiple storms and warm weather in St. Mary's.

The number of vehicles reported to have gone through the ice around Yellowknife continues to rise. According to the N.W.T. Department of Environment, its spill response team has responded to three vehicles through the ice so far this year.