I recently returned from a road trip beginning at Crater Lake, Oregon, traipsing up the coast, up the Columbia River Gorge, and finally to Glacier National Park in Montana. And thar be bears on the trip.
Glacier National Park has lost most of its glaciers. Of the more than 100 present when it was made a park in 1910, only 26 remain as “active glaciers.” Climate change is hastening the demise. There is, however, still wildlife in the park (though that too has diminished). In particular are bighorn sheep (Ovis canadensis) and black bears (Ursus americanus).
We saw the first bears – a mother and two cubs – snoozing on a sandy riverbank along the Many Glacier road. Because of the ongoing fires in the center of the park, we had to drive all the way around from the western side along the southern edge and up the eastern side of the park. It was here that we determined the inadequacy of our binoculars and camera equipment. Luckily we found a delightful gentleman who let us gaze up close and person through his powerful spotting scope. This trio of bears were a bit distant from the road so my photos aren’t perfect, but you can see the coloration of one of the two cubs is more silver than that of the mother black bear and the other cub. Black bears can be all black, have some silver or brown markings, or even all brown (not to be confused with brown bears, which are a different species and include the subspecies we know as “grizzly bears; I know, it’s complicated).
Earlier, on the Going to the Sun road in the center of the park we could make it as far as Logan Pass, after which the road was closed almost all the way to the western gate. Logan Pass is home to the highest point in the park and location of the Continental Divide marker at 6,646 feet. But our attention was grabbed by movement on the hillside – bighorn sheep. The most obvious characteristic is the namesake big horns on males. The horns themselves can weigh up to 30, a full tenth of their 300 pound total weight. The ones we saw were the Rocky Mountain bighorn, a subspecies commonly found in the area. Two other subspecies – the Sierra Nevada bighorn and Desert bighorn are found further south and are currently endangered.
Back on Many Glacier road we stopped outside the entrance to a park hotel. Up on the hill we saw another mother black bear with her two cubs. These again showed the light silvery touches to the shoulders and rump. They pretty much ignored us and other bear gawkers as they filled their bellies with grass and bushes. We think of bears as being carnivores, but most of their diet is vegetation. In September they are likely searching for hazelnuts, acorns, pine nuts, or berries such as huckleberries.
We didn’t see many other animals on the trip. No grizzly bears, no lynx, not even any mountain goats (the park’s symbol), moose, coyotes, or deer. We didn’t see any, but we clearly smelled skunk, another park regular. But we were satisfied to see the large group of bighorn sheep and two sets of bear trios. At least until the next time.
David J. Kent is an avid science traveler and the author of Lincoln: The Man Who Saved America, in Barnes and Noble stores now. His previous books include Tesla: The Wizard of Electricity (2013) and Edison: The Inventor of the Modern World (2016) and two e-books: Nikola Tesla: Renewable Energy Ahead of Its Time and Abraham Lincoln and Nikola Tesla: Connected by Fate.
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A recent road trip along the coast of Oregon added two new aquariums to my life list, now sitting at 
In the last quarter of my most recent 2000 mile road trip we met a lovely couple at a Montana rest stop. Gene and Jacque were sitting in foldable chairs next to their large RV camper when we pulled in to stretch our legs. As we talked about life I realized that very day – September 12th – was the 5-year anniversary of my science traveling life.
When he was not 
Tesla had begun working on bladeless turbines when he was consulting with the Westinghouse Company in Pittsburgh, but this project, like so many others, was put on hold while he toiled on his alternating current designs of high potential and high frequency. But in 1906 he gave himself a fiftieth birthday present by demonstrating his bladeless turbine in public. The basic design of the turbine relies on the principle of boundary layer flow, that is, where the movement of the liquid or gas passes over a series of smooth disks. Some of the liquid or gas adheres to the disks, which creates a vortex that spirals toward the center and spins the turbine. Tesla described it in an interview with the New York Herald in 1911:
