Just in time for the summer travel season, the Essential Guide to Capitol Reef National Park has been published on the Traveler.

Wolf numbers have plummeted at Yukon-Charley Rivers National Preserve in Alaska, where National Park Service officials attribute the steep decline to the state's desire to reduce predators to improve hunting.

Dinosaur tracks millions of years old can be tough to discern from ripples in sandstone, so it seems only natural to ask how to tell the real thing from fickle currents in the floor of Horseshoe Canyon in Canyonlands National Park.

For more than 300 years, since late in the 17th Century, the shorthand attributed to Roger Williams in the margins of a library book befuddled code crackers. But now a team of students and faculty at Brown University has cracked it and come to learn what the founder of Rhode Island wrote.