Three previously unknown species of trapdoor spiders have been discovered in Joshua Tree National Park, and scientists have named one after Bono of the rock band U2 in honor or their Joshua Tree album.

Parks are great spots to enjoy observing wildlife, but one of the challenges for many visitors is the question: "What bird (or animal) is that?" Now there's a source of help in wildlife identification for both experts and amateurs: The "world’s largest natural sound archive" has gone digital, and it's available on-line ... and free of charge.

A host of federal agencies are working to collaborate on efforts to protect coral reefs in the Caribbean.

A man intending to hike roughly 30 miles along the Appalachian National Scenic Trail in Great Smoky Mountains National Park has been found dead at the park's Tricorner Knob Shelter.