Alaska's Koyukuk River was the site of an interesting discovery. During a float down the river, a group of University of Virginia professors spotted a woolly mammoth tusk along the riverbank.

From the Koyukuk River, to the Kuskokwim, to Norton Sound, to Bristol Bay’s Igushik River, unusually warm temperatures across Alaska this summer led to die-offs of unspawned chum, sockeye and ...

Of the river itself, the superintendent said, “It’s stunning, I think. Even by Alaska standards, it’s a stunning river.” Stamps featuring the rivers went on sale May 21.

Alaska's Koyukuk River was the site of an interesting discovery. During a float down the river, a group of University of Virginia professors spotted a woolly mammoth tusk along the riverbank.

The largest die-off reported comes from the Koyukuk River, a tributary of the Yukon. Researchers suspect record warm waters as the cause but not all salmon are affected.

Koyukuk River Tribal Tours is launching a tour this summer for visitors seeking an authentic Alaska Native experience. The tour offered by the Hughes-based company offers guests the opportunity to ...

Located west of the Koyukuk River in Western Alaska, the dunes are the site of an uncommon discovery. In 2001, biologists for the U.S. Fish and Wildlife Service were walking the dunes when they ...

Global warming is eroding the creation of permafrost in Alaska. This shrinks the size of the state. “In the Northern Hemisphere, much of the ground is permafrost, which is frozen year-round.