GPS tracking at use in Yosemite National Park is invaluable for scientists studying wildlife in the park. From bears to birds to bighorn sheep, GPS is a critical tool for researchers and their work to study and protect both ubiquitous and rare species.

Eastern mountain ranges too often, and unjustly, are given short shrift for their majesty when compared to Western ranges. But as George Wuerthner makes clear in the following essay, the White Mountains in New Hampshire not only are an amazing tract of wilderness-quality forests, streams and lakes, but deserve to be embraced by the National Park System.

Early summer is an incredible season to visit Grand Teton National Park in western Wyoming. The forests, meadows, and wetlands are greening up, runoff has filled Pilgrim, Spread, and Pacific creeks, there's still a good measure of snow on the craggy Tetons, and wildlife abounds.

Flooding that ripped through Yellowstone National Park this week could be considered a "once in 500 years" event, according to the U.S. Geological Survey.