The National Park System contains a wealth of fossils and dinosaur bones that tell a story about our geologic past, but stringer laws, better enforcement, and better education programs are needed to more fully protect these valuable relics. By David Williams
Even as biologists and researchers work to restore endangered mussels in the Southeast, the threats to these fragile and important creatures are mounting. By Kim A. O'Connell
The sliding rocks in Death Valley National Park's Racetrack Playa have long defied logic, puzzled scientists, and dazzled park visitors. By Ryan Dougherty
Dwindling habitat and increased mercury contamination could spell disaster for the Indiana bat, but scientists are working to restore the animal's range at Mammoth Cave. By Amy Leinbach
An ancient society thrived at Mesa Verde National Park in Colorado before vanishing from the area. Archaeological sites provide a glimpse of this ancient society. By Ryan Dougherty
