Paleontologists find new dinosaur species in nearly two million acres of deep canyons at Grand Staircase Escalante Monument in Utah and Arizona. Fly-fishing is almost a spiritual endeavor for some Georgia anglers, and keeping waters clean is one of their aims. Clean water is hard to find around the port of San Diego -- decades of shipbuilding have left a toxic mess. In Wyoming, energy companies contribute to a fund that preserves migratory pathways. Rising sea levels threaten the delicate balance of fresh and salt-water marshes around the world.