National Park Service officials told Yellowstone's departing superintendent that he wasn't being forced out over a disagreement with Interior Secretary Ryan Zinke

The company planning to build an oil refinery near Theodore Roosevelt National Park in North Dakota is asking state regulators to dismiss a complaint filed over the site.

Investigators believe an improperly rigged belay device likely caused the 300-foot (91-meter) fall that killed a New York professor on a popular Grand Teton National Park climbing route in northwest Wyoming

Frog symphony and ancient trees in a verdant Louisiana swamp

A dispute over a national monument in Oregon has the Trump administration supporting former President Barack Obama, pitting itself against timber interests and taking a stance in court that President Donald Trump could later do a 180-degree turn on

Congo's Virunga National Park has announced the birth of two baby gorillas, saying this brings to nine the total of mountain gorilla born this year

A 19-year-old Michigan man has been fined $1,000 for climbing Mount Rushmore

A dinosaur covered in bony armor from its spikey head to its clubbed tail is newest fossil addition to a Utah museum

Researchers say pollution levels in some U.S. national parks are similar to cities like New York and Los Angeles and are leading people to avoid visiting

7 endangered rhinos dead in Kenya relocation bid, official says; 'a complete disaster'