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 ...

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 ...

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 ...

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 ...

It's easy to picture what the Ojibwa saw in the 1400s when they first traveled in birchbark canoes to what is now Ontario's Quetico Provincial Park. Little here has changed since then and, as part ...

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

Fifty years since reunification, the fall of Saigon is a distant memory and microbreweries, cool cafes and Michelin-lauded ...

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

Although horses may be the stars of the Kentucky Derby, hats take center stage at the 151-year old horse race in the American ...

These 1,000-pound creatures travel in large herds and can smell water miles away. Now, the race is on to stop them from ...

Scientists reveal new details about the 5.3-million-year-old flood, which triggered earthquakes, generated tropical-storm ...