Here are six volunteers who make a difference at National Parks and other federal lands, from an 8-year-old who does the ...

More than 90 years after it was created during the Great Depression, Lake Mead provides about 90% of the water supply in Southern Nevada. And while much of the focus is on the lake shrinking, those ...

It's been 125 years since Interstate State Park opened, followed by 49 others that have helped preserve views and provide ...

Humans were present in North America 10,000 years earlier than previously thought, according to a new study. Researchers from ...