A 23-year-old hiker whose disappearance sparked a nearly two-week-long land and air search of dense Australian wilderness has been found alive, authorities said Wednesday.

The two new monuments -- the Chuckwalla and Sáttítla Highlands -- total nearly 850,000 acres, according to the administration.

In last days of his presidency, Biden adds more protected sites to a long list of conservation accomplishments ...

Sebastian Pelletti and Hernan Salas free-climbed a new route on the southwest face of 2,300m Cerro Mascara Chile's Torres del ...

In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.

The area is a spiritual center for the Pit River and Modoc Tribes and encompasses mountain woodlands and meadows home to rare flowers and wildlife.

With these two new monuments, Mr. Biden has protected more federal land and waters than any other president, about 674 ...