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.

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 ...

The Koyukuk River doesn’t loom large in gold rush era histories of Alaska, though not for lack of effort. As would-be prospectors flooded into Alaska and the Yukon following the 1896 Klondike ...

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 ...

The Koyukuk is a 425-mile feeder stream of the Yukon River and the last major tributary to flow into the Yukon before it empties into the Bering Sea, the major waterway separating America and Russia.

The study examined the Koyukuk River, which flows into the Yukon River ... The loss of this permafrost will shrink Alaska’s size. This is another example of how climate change can radically ...