Another lawsuit has been filed against the National Park Service over its management plans for a section of Big Cypress National Preserve. The groups contend that the plan would allow too much off-road vehicle use in the area of the preserve known as the "Addition" Lands."

Teams of scientists have headed into the Utah desert in years past to better understand life on other planets, so why not go underground to do the same? A recent workshop at Carlsbad Caverns National Park was intended to help scientists envision exploring caves on other worlds.

Dramatic rescues employing helicopters and highly-trained crews have become almost commonplace from high mountains, deep canyons and other challenging terrain in parks across the country, but sometimes the solution to an emergency requires a return to the basics, including a trio of hardy park employees…and a mule.