Thousands of non-native plants have gained a foothold on some 2.6 million acres of national parkland. To help eradicate these plants, the National Park Service has established Exotic Plant Management Teams throughout the country. By Connie Toops
The remote coast of Katmai National Park and Preserve supports the continent's highest concentration of brown bears. As growing numbers of people mingle with the bears, experts agree that up-close behavior endangers both people and animals. By Bill Sherwonit
Alaska and the national park sites in our northern-most state are showing dramatic signs of global climate change. Melting permafrost and glaciers, eroding coastlines, and insect invasions all point to warming temperature trends. By Bill Sherwonit
Historic runs of salmon may soon return to the Elwha River and Olympic National Park if plans proceed to remove two dams that have blocked salmon runs for more than 90 years. By Douglas Gantenbein
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
