The National Park Service is exploring whether to require protest organizers to pay for the cost of providing law enforcement and other support services for demonstrations held in the nation's capital

Artists are putting the finishing touches on an 82-foot-long blue whale made from discarded plastic that will be in display near San Francisco's Golden Gate Bridge to raise awareness about ocean pollution

North Dakota regulators won't order a company to stop work on an oil refinery near Theodore Roosevelt National Park so they can study the appropriateness of the site

The Trump administration says companies can't launch new efforts to mine for gold, silver and other minerals in a picturesque area near Yellowstone National Park

U.S. Interior Secretary Ryan Zinke has approved a 20-year ban on new mining claims in the mountains north of Yellowstone National Park after two proposed gold mines raised concerns the area could be spoiled

Nepal says it has been successful in almost doubling the tiger population in less than a decade

A federal judge has tossed a lawsuit from a group of fishing associations that challenged the creation of an underwater monument in the Atlantic Ocean

The U.S. Forest Service is set to round up 1,000 wild horses and says that many of them could be sold to distant slaughterhouses

Melania Trump has sashayed to the beat of African music while being welcomed to an orphanage in Kenya

Melania Trump feeds baby elephants as Kenya visit begins, highlighting conservation