Houses made of tuff blocks and axes made of Fibrolite may sound like a workshop in high-tech building materials or "green living," but you'll find examples of this very old technology in a park with great scenery and top-notch archeology. If you visit this area, keep your eyes open for squirrels with tufted ears.

Though winter is far from spent in the Rockies, the folks at Rocky Mountain National Park say they have accomplished their goals in terms of removing elk from the park's herds for this winter.

Though it's been a mostly quiet winter on the coast of North Carolina, things might get a bit testy in the coming weeks as Cape Hatteras National Seashore releases its pre-nesting closure plans to protect piping plovers, a threatened species.