The Arctic is no stranger to loss. As the region warms nearly four times faster than the rest of the world, glaciers collapse, wildlife suffers and habitats continue to disappear at a record pace.

Drained lake basins make up more than half of the Arctic coastal plain, but the complete drainage of a lake is rarely witnessed by people.

The record was driven in part by a heavy rainstorm that set Kotzebue's single-day precipitation record.

The Baldwin Peninsula near Kotzebue has seen a massive increase in beavers over the last two decades, according to new research from the University of Alaska Fairbanks.

How the beavers got to the Baldwin Peninsula, which is surrounded by salt water and extends north of the Arctic Circle, is anyone’s guess.

After a decade of heavy erosion, a lake in the Bristol Bay village of Port Heiden finally breached, sending water gushing into the bay.

Ponds in and around the Nome area are drying up.

Beavers were not previously recognized as an Arctic species, and their engineering in the tundra is considered negligible. Recent findings suggest that beavers have moved into Arctic tundra regions and are controlling surface water dynamics, which strongly influence permafrost and landscape stability. Here we use 70 years of satellite images and aerial photography to show the scale and magnitude of northwestward beaver expansion in Alaska, indicated by the construction of over 10,000 beaver ponds in the Arctic tundra. The number of beaver ponds doubled in most areas between ~ 2003 and ~ 2017. Earlier stages of beaver engineering are evident in ~ 1980 imagery, and there is no evidence of beaver engineering in ~ 1952 imagery, consistent with observations from Indigenous communities describing the influx of beavers over the period. Rapidly expanding beaver engineering has created a tundra disturbance regime that appears to be thawing permafrost and exacerbating the effects of climate change.