Yellowstone National Park administrators appear to have lost ground on a 2009 pledge to minimize cellphone access in backcountry areas

Three wildlife advocacy groups are suing to force the U.S. government to take a closer look at whether the hunting and slaughter of bison that wander outside of Yellowstone National Park threaten the animal's survival

Government investigators are due in Yellowstone National Park to look into an employee's claims of sexual exploitation of female workers and financial misconduct

The National Park Service says the Washington Monument will be closed indefinitely because of ongoing problems with its elevator

A House committee is investigating complaints of sexual harassment, bullying and other misconduct at national parks across the country, including at iconic sites such as Yosemite, Yellowstone and the Grand Canyon

The U.S. Forest Service is apologizing after it ripped up a portion of the Trail of Tears in the Appalachian Mountains, reopening wounds for Native Americans who consider the land sacred