The love songs of these Panamanian frogs is a dinner bell for fringe-lipped bats. But how do they learn which frogs and toads ...

Experts—including a three-time marathoner, a running coach, an ultramarathon winner, and a podiatrist—weigh in on the right ...

May’s night sky is packed with astronomical events—find out when and where to look for meteor showers, ancient star clusters, ...

From Peru to Egypt, tourists can actively participate in digs, preservation projects, or workshops led by experts in the ...

Rising dramatically from the Gulf of St. Lawrence, massive, sheer Percé Rock towers off the tip of Quebec's Gaspé Peninsula like a ship at sea. This rugged, windswept region spans 11,714 square ...

In the summer of 1928, American adventurer Fenley Hunter paddled up the South Nahanni River hoping to find a huge waterfall that seemed largely the stuff of Dene legend at the time. Hunter thought ...

On June 14, 1914, three men climbed Lassen Peak to see why a seemingly dormant volcano had started rumbling 16 days before. Now, peering into a newborn crater, they felt the ground tremble.

A sun-swept corner of the Painted Desert draws more than 600,000 visitors each year. While most come to see one of the world's largest concentrations of brilliantly colored petrified wood, many ...

At Mesa Verde, Spanish for "green table," multistoried dwellings fill the cliff-rock alcoves that rise 2,000 feet above Montezuma Valley. Remarkably preserved, the cliff dwellings cluster in ...

One of the world’s oldest national parks, Mount Rainier became part of the federal system in 1899, shortly after its last eruption. Park status was the culmination of a long campaign by John ...

Robert F. Kennedy, Jr., calls the Great Bear Rainforest "the planet's last large expanse of coastal temperate rain forest." Stretching for more than 250 miles along the coast of British Columbia ...

With glacier-clad peaks rising almost vertically from thickly forested valleys, the North Cascades are often called the American Alps. The national park forms one unit of the North Cascades ...