Denali National Park has closed to visitors due to the rapidly spreading Riley Fire near its entrance, prompting evacuations and a significant firefighting response.

For the first time since the 1950s, Denali's Muldrow Glacier is surging! It is estimated that the glacier is currently advancing between 10-20 meters (30-60 ft) a day. This has major implications for the popular north side climbing route, and may lead to a significant flood of the McKinley River. The surge may have started as early as January of this year and could continue for several more months.

The answer to the Tang-colored mystery involves tiny spruce needle rust fungus spores that also rely on Labrador tea plants to survive.

Small spiny growths on a rosebush resemble spiny galls created by cynipid wasps.

The wildfires can burrow into rich organic material, such as the vast peatlands that ring the Arctic, and smolder under the snowpack throughout the frigid winter.

The River Forecast Center released their spring breakup forecast for 2020. Flood potential is expected to be above average for areas south of the Brooks Range. Areas of north of the Brooks Range should see a normal flood potential.

There are over one hundred and forty landslides along the Denali Park road, the 92 mile road through Denali National Park and Preserve. None are more threatening than the Pretty Rocks Landslide at Polychrome Pass.

Kettle ponds in Denali National Park contain less water this spring than in previous years, due to low snowfall and permafrost thaw. Shrubs are replacing grasses as the lakes dry.

In the earliest breakup since the contest began in 1917, the Nenana Ice Classic Tripod fell early this morning.

NENANA — Early warm spring weather is adding a lot of excitement to the Nenana Ice Classic this year, resulting in a surge of last-minute ticket sales.

Beetles that killed millions of acres of trees in the 1990s were a first sign of climate change. In a new flare-up, they continue marching north as Alaska warms.

The state Department of Fish and Game is warning pet owners in the Interior and Southcentral Alaska about a recent spike in reports of tularemia – sometimes called “rabbit fever.”

FAIRBANKS - A windstorm knocked out power to thousands of people from North Pole to Nenana on Sunday, according to the Golden Valley Electric Association.

Of the 140 unstable slopes along the 92-mile park road, Pretty Rocks has the most potential to disrupt traffic.

John Craighead "Craig" George was swept under a logjam last Wednesday on the Chulitna River near Cantwell, Alaska State Troopers said. The dive team responded to the area Friday morning but found that the water was too high to deploy.The rafting party was decending when they encountered an unusual amount of logjams.

The aggressive infestation that took hold in the Matanuska-Susitna Borough north of Anchorage in 2016 has now spread north, covering hillsides in the communities outside the park with rustred dead trees and reaching into park boundaries.

A worker in Kantishna glimpsed the rare phenomenon in which hundreds of Alaska gnat snakeworm larvae formed a crawling column.

The glacier advanced just over 3.5 miles and moved about 65 feet per day earlier this year. Studying the surge involved a massive undertaking.