At a time when books are commonly read on electronic devices, coloring books for adults have become a publishing phenomenon, rising to the top of sales charts and taking up prominent space at bulk retailers. Now, park lovers of all ages can color in scenes from Yellowstone National Park.

A group of youths learned about the changing landscape in Alaska’s Denali National Park and Preserve as they were taught backcountry skills and took “repeat” photography of Sunset Glacier.

I met the bison calf who took a ride in an SUV early one evening as I drove west in Lamar Valley, past the pullout known as “Picnic.” The late afternoon sun on a stormy day landscape was the light that photographers dream of shooting, with wild animals on a horizon and Yellowstone National Park's gorgeous mountains off in the distance.

Legal wrangling over the ownership of trademarks to iconic facilities in Yosemite National Park could commence sooner than expected following a decision by the U.S. Trademark Trial and Appeal Board to remove itself, at least temporarily, from the fray.