How many pairs of bald eagles call Grand Teton National Park home? Do you know how much of the park has been surveyed for archaeological resources? How many glaciers are there in the park, and how are they faring? The answers to those questions are just some of the information you can glean from the park's Vital Signs report for 2013.

For many, the focal point of a visit to Lassen Volcanic National Park in California is a hike to the summit of Lassen Peak. But to really appreciate the volcanic forces that tore the peak open back in May 1915, take a short hike around the Devastated Trail.

Think it'd be nice to spend some time relaxing this winter in Death Valley, or maybe in Sedona, or perhaps in Wyoming right outside Yellowstone National Park? Those destinations could be on your calendar if you're the winning bidder in a fund-raising auction for Friends of Saguaro National Park.

Jumping, even just a little bit, can be dangerous in Zion National Park. Two park visitors discovered that in two different incidents in a ten-minute period that left them with broken legs.