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Glacier National Park Officials Developing Battle Plan For Lake Trout in Quartz Lake

In a sign of how difficult it can be to overturn mistakes in national parks, crews in Yellowstone National Park are moving into their second decade of fighting non-native lake trout in Yellowstone Lake, where they're threatening to wipe out the lake's native cutthroat trout population. Now Glacier National Park has its own lake trout battle.

Historic Oath of Allegiance Comes Home to Valley Forge National Historical Park

Military personnel, federal employees and elected officials take an oath of allegiance or oath of office, but during the American Revolution there was a lot at stake for those who promised "true allegiance to the United States of America"—in writing. One of those historic documents was recently donated to Valley Forge National Historical Park.

Interior Secretary Salazar Upholds Delisting of Gray Wolves in Part of Yellowstone Ecosystem

In a move quickly condemned by conservationists, Interior Secretary Ken Salazar today upheld a decision by the U.S. Fish and Wildlife Service to remove Endangered Species Act protection from thousands of gray wolves, including many in the Greater Yellowstone Ecosystem.