Hours spent in a line waiting to enter a national park. Crews working to maintain trails that climb through piny forests and are blighted by piles of human waste. Visitors taking out their rage against fellow visitors and park staff when they can't find a parking spot at their favorite trailhead or overlook. These are some of the issues National Park Service staff are trying to solve as they cope with record visitation.

Interior Secretary Ryan Zinke, a lightning rod for conservationists and environmentalists and long portrayed by his critics as being in the pocket of the energy industry, will leave the administration by year's end, President Trump said Saturday.

National Park Service employees continue to trail most of their colleagues elsewhere in the Interior Department when it comes to pay, leadership, work-life balance, and other key indicators that help define the best places to work in the federal government.

There's a Chinese proverb that goes like this: Teach a man to fish, and you feed him for a lifetime. At Voyageurs National Park, the wolves have taken it upon themselves to learn how to fish for some of their meals.