The northern lights could also be visible Tuesday night in parts of Washington, Idaho, Montana, North Dakota, South Dakota, ...

Since its founding on August 25, 1916, the U.S. National Park Service has assembled 419 protected units, of which 62 hold the ...

The California Redwoods can be found in several parks across the state. They are one of the top destinations in the state.

Thousands of events are scheduled across the globe to celebrate Earth Day on Tuesday, April 22. Here's a handful happening in ...