Two bull caribou of the Western Arctic Caribou Herd swimming across the Kobuk River during fall 2011 migration in Kobuk Valley National Park. The herd has been in decline since hitting its peak ...

The Western Arctic Caribou Herd, once the biggest in Alaska, is faltering, having fallen from a high of 490,000 animals in 2003 to only 152,000 as of 2023. But to the east, the Porcupine Caribou Herd ...

A new study highlights the importance of caribou and muskoxen to the greening Arctic tundra, linking grazing with plant phenology and abundance in the Arctic tundra. The story of Arctic greening has ...

Caribou mothers gnaw on their own antlers for nutrition after their long migration in the cold and dry climate of the Arctic tundra, a new study reveals. Caribous, also called reindeer, are the only ...

In the harsh Arctic tundra, survival runs on a strict budget of calories and minerals, and every nutrient matters. Yet female reindeer and caribou invest precious energy into growing something that ...

Arctic tundra, which has stored carbon for thousands of years, has now become a source of carbon dioxide. The new research, led by scientists at the Woodwell Climate Research Center in Falmouth, ...

Arctic tundra, which has stored carbon for thousands of years, has now become a source of planet-warming pollution. As wildfires increase and hotter temperatures melt long-frozen ground, the region is ...

A group of muskoxen gather on the Arctic tundra near Kangerlussuaq, Greenland. (Jeff Kerby) The story of Arctic greening has overlooked some main characters. At center stage are climate change and ...

The story of Arctic greening has overlooked some main characters. At center stage are climate change and warming temperatures. Meanwhile, large grazing wildlife, such as caribou and muskoxen, also ...