National Park Service stores sell books, photographs, postcards and T-shirts. But every once in a while, you can also discover some gems, both silly and fascinating, in the visitor center stores. What have you found?
If you were in Yellowstone National Park last year, pat yourself on the back. You helped push the park's annual visitation to a record 3,640,184 heads.
While mule rides will continue at Grand Canyon National Park under a new stock use plan, only 10 visitors a day will be allowed to ride below the South Rim, a decision lamented by some who say it will deprive many of venturing into the canyon's Inner Gorge.
A kayaker on a private river trip down the Colorado River through Grand Canyon National Park failed to successfully navigate a rapid and was pronounced dead after efforts to revive him failed.
The side-by-side nature of Grand Teton National Park and the Jackson Hole Mountain Resort makes for a magnificent setting, but one which can be dangerous if you're not sure where you are. Fortunately for a South Dakota snowboarder, park rangers and resort patrollers are experts at coming to the rescue.
They collar moose at Voyageurs National Park. And by doing this, biologists and ecologists can learn not only how the animals are coping with warming weather related to climate change, but how different land-management techniques affect them.