Nine Minnesota businesses that rely on the Boundary Waters Canoe Area have sued the Interior Department, challenging its decision to reinstate the federal mineral rights leases for the planned Twin Metals copper-nickel mine near Ely

Researchers find remains of 2 Civil War soldiers buried in surgeon's pit with batch of severed limbs on a Virginia battlefield

The remains of a Native American man who died 10,000 years ago have been returned to an island off Southern California where they were discovered in 2005

A new superintendent has been named for Yellowstone National Park after his predecessor said he was being forced out by the Trump administration

North Dakota's Health Department has issued a permit allowing construction of an oil refinery about three miles from Theodore Roosevelt National Park

Sen. Tina Smith has proposed an amendment to force completion of a land swap needed for the proposed PolyMet copper-nickel mine in northeastern Minnesota

Scientists say there's no way to know when the volcano eruption on Hawaii will end or if more lava-spewing vents will open

The leader of Yellowstone National Park says he's being forced out as a "punitive action" after disagreements with the Trump administration over how many bison the park can sustain

Officials have decided to relocate gray wolves to Isle Royale National Park in Lake Superior, where the predator species that has roamed the remote wilderness for about 70 years is on the brink of disappearing

For the second time in three days, an elk has attacked someone in Yellowstone National Park