Arctic sea ice last month reached its greatest extent for the season, and it was the lowest in the satellite record. Now researchers say that ice is also younger and thinner than it once was.

Alaska’s tundra landscapes carpet a good portion of the state, from the North Slope to the elbow of the Alaska Peninsula. Researchers say it's slowly sinking in places -- as much as a fifth of an inch each year.

The rivers on the Kenai Peninsula are shucking their ice much sooner in the past few years than they have in decades, some flowing freely as early as

Unalakleet River goes out early

Early green up following a very mild winter with little snow.

Early river break-up and low water

Earliest Tokositna River break up ever in Denali State Park.

No Permanent Winter Ice and Early Break Up For Nome

We have had an extremely warm winter, and the river had many open holes that never froze completely.

Early spring and early waterfowl

On 11 April 2016 we observed high slushflow and wet snow avalanche activity at the environmental monitoring station Kobbefjord in West Greenland.

An ice road near Deline, N.W.T. is closed after a fuel tanker plunged through on Saturday.

Persistent warm temperatures the last few weeks have melted much of the snow, including stockpiles the city tried to set aside.

Winter transformed from time of snow to time of ice.

Open water interferes with subsistence practices.

Early thaw of sloughs in and around Nulato