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The short answer is... we aren't entirely sure and people are still arguing about it. What we do know is Alaska's northern tree line follows the 10 degree C limit of mean July temperature. ##Whaaaaat? What does that mean??? That means if the average temperature in July is less than 10 degrees C

Catching (and Releasing) Squirrels Toolik Field Station, North Slope, AK June 23, 2019 *** ####Photo of the Day: *** Today was a change of pace, as I was able to join “Team Squirrel” on their final day at Toolik. This group of researchers consists of [Dr. Cory Williams](http://www

I had the opportunity to go out into the field with the vole researchers at Toolik Field Station. They go out three times a day to check the status of the traps they have laid out over a grid. One by one, they check to see if the metal traps have been tripped by a vole seeking to feast the peanut

We went looking for muskox and we were not disappointed. These guys were hanging out along the Dalton Highway, eating away at the grass and willows, totally unphased by us taking pictures and video of them from the road. Muskox can weigh 600- 900 pounds and live in large groups up to 20 individuals

The Northeast Science Station: Pleistocene Park --- We landed. It's in the 80s, hot for this region. Two men, dressed in fatigues board the plane to check our passports. After visiting each passenger they lead us into a one-room building with a floor mostly covered by piles of cardboard boxes, as

The Toolik Field Station has some resident foxes that can be spotted regularly around camp. We took a drive out to look for wildlife and spotted another fox on the Dalton highway. Foxes eat voles, lemmings, hares, other small mammals, birds and their eggs, invertebrates, berries, and carrion. They

The Mobile Instrumented Sensor Platform, or MISP Tram is a set of instruments that measures the vegetation of the tundra across a 50 meter transect. It slowly makes its way along cables and records things like the temperature, green-ness and height of the vegetation. Watch the video below to see it

Photo-Bio Part 5: Inoculation Toolik Field Station, North Slope, AK June 21, 2019 *** ####Video of the Day: The below video provides a great comparison of two amazing birds. On the left is a white-crowned sparrow (Zonotrichia leucophrys), and on the right is a bluethroat (

Today is officially the first day of summer! It is also the longest day of the year. By that, I mean daylight hours. As we move through the summer, days will become shorter and shorter until the winter solstice, or shortest day of the year. In the Arctic this time of year has a midnight sun, which