Thirty-two-million years after a saber-tooth cat stalked prey on the landscape known today as Badlands National Park, a 7-year-old girl working for her latest Junior Ranger badge spotted the animal's fossilized skull protruding from a hillside.

Beginning on Monday, May 6, the National Park Service will initiate a limited capacity reopening of The Oaks, the home of Booker T. Washington in Alabama.

Hallowed ground that absorbed the blood of colonials fighting for independence and nearly a century later of Union and Confederate soldiers engaged in a civil war are among the top 11 "Most Endangered Historic Places" in the United States identified by the National Trust for Historic Preservation.

Yellowstone National Park is implementing additional measures to help stop the spread of aquatic invasive species into park waters.