The Range of Light Film Festival staged in Yosemite National Park last month brought to the screen many incredible videos, including this five-odd-minute version worth your attention if you pine for the high Sierra.

Wild river, national river, scenic riverways. Aren’t they all water when you really get down to it? Here’s a National Park Service primer on the different categories of rivers in the National Park System:

Though remotely located in the mountains of northeastern Utah and northwestern Colorado, Dinosaur National Monument goes through days when the air quality is almost as bad as you'd find in major metropolitan areas.

Yellowstone National Park isn't the only national park with bison issues. Far to the south, Grand Canyon National Park officials are trying to better manage bison on the park's North Rim. Actually, they're trying to get the animals off the park's property on the North Rim.