More than a decade after non-native lake trout were discovered in Yellowstone Lake, the battle to beat down the population of those voracious fish continues. While gill-netting long has been used to cull the lake trout, Yellowstone National Park officials want to increase those operations to help native cutthroat trout survive the onslaught of the bigger fish.

While the final paperwork has been signed concerning an off-road management plan at Cape Hatteras National Seashore, the arduous task of formalizing a rule means the seashore will continue to operate next summer under a consent decree.

Humpback whales are a big attraction for visitors to a number of NPS sites, and seeing a whale from a boat or the shoreline is a memorable experience. Now a non-profit group's website lets you hear the haunting songs of the humpbacks as they begin arriving in Hawaiian waters for their annual migration.