Authorities say there's a new wildfire burning in northern Arizona and smoke is visible from Grand Canyon National Park and surrounding areas.
The Montana Supreme Court has reversed a lower court ruling that blocked transfers of Yellowstone National Park bison as part of a government-sponsored conservation initiative.
Additional stone or bronze carvings depicting Dwight D. Eisenhower's accomplishments as Army general and president mark the latest creative changes architect Frank Gehry has made to his design for a planned memorial park honoring Ike near the National Mall.
People stand near one of the hundreds of homes considered a total loss in the wildfires near Colorado Springs, Colo., Monday, June, 17, 2013.
A campfire left untended sparked a blaze near Yosemite National Park that is threatening hundreds of homeowners -- but firefighters are starting to get a handle on it.
Teachers will travel to Stockton Island to learn about climate change impacts in the Apostle Islands as part of the "Changing Climate - Changing Culture" teacher institute scheduled for July 15-18.
An unattended campfire near a main route into Yosemite National Park has grown into a more than 2-square-mile blaze that officials said Tuesday has led to the evacuations of 800 homes and 1,500 people.
Starting Thursday, federal and state officials say they will impose the restrictions on public lands in southern Utah and northern Arizona.
Erik Weihenmayer, the famed blind adventurer who has climbed to the top of Mount Everest, was part of the effort to save nearly 260 acres at the top of the Zion Narrows Trail from development.
A herd of dinosaurs are trapped in rock outside Arches National Park, and state paleontologists need a helicopter to bring it back to the lab to see what's really inside.
Federal agents appeared to be reviving the hunt for the remains of Teamsters leader Jimmy Hoffa on Monday as they searched a field in suburban Detroit.
Rain helped firefighters douse Colorado's most destructive wildfire in state history, while a new wind-whipped blaze in California forced evacuations and threatened homes Monday near Yosemite National Park.
NSA leaker Edward Snowden is defending his disclosure of top-secret U.S. spying programs in an online chat with The Guardian and attacking U.S. officials for calling him a traitor.
Acadia National Park rangers say a broken rope was to blame for an incident that injured three climbers on a 25-foot-high rock face and led to a complicated rescue.
A wind-whipped wildfire near the main route into Yosemite National Park in the Central Sierra foothills forced the evacuation of about 150 houses and threatened others, a state fire official said on Monday.
The annual Flint Hills butterfly census is coming up, and officials at the Tallgrass Prairie National Preserve are inviting the public to take part.