Caribou, migrating birds and many other types of wildlife rely on this expanse of wetlands and tundra. Humanity and the climate depend on a healthy Arctic, too.

A new study shows how thawing permafrost and intensifying storms will change how water moves into and through Arctic rivers.

The early heat melted snow and warmed rivers, heating up the land and downstream ocean areas. The effects harmed salmon fisheries, melted sea ice and fueled widespread fires.

Releasing reflective particles into the upper atmosphere would help us tackle climate change – but it’s not without risk.

Thawing permafrost in the far north is an inviting prospect for invertebrate burrowers.

Large stretches of the Arctic are carbon-rich peat bogs. As the region warms and dries, lightning strikes can spark underground fires that can burn for years.

A recent paper suggested damaging climate tipping points could be closer than first thought.

Arctic lakes are drying up. A new study offers clues as to why—and what can be done to slow the loss.

Ground is collapsing and massive lakes are draining in a matter of days. Thawing permafrost is having profound effects on the region and its infrastructure.

The growing season on the tundra is starting earlier as the planet warms, but the plants aren’t sequestering more carbon, a new study finds.