Debris from an enormous trash-laden vortex in the North Pacific is delivered to Hawaiian Archipelago shorelines, making beach cleanups a never-ending task at Kalaupapa National Historical Park.

How's the salmon population doing in Glacier Bay National Park? With increasing fishing pressure, it's an important question, and the park is proposing a high-tech, low-impact method to gather some key information. The study site is located in designated wilderness, and the park is inviting public input on the idea.

If you're making plans to visit Denali National Park and Preserve next year, you can now make reservations for any of the park's four largest campgrounds or a seat on the shuttle buses.

The convergence of the winter solstice, a full lunar eclipse, and some of the country's darkest night skies make Bryce Canyon National Park the place to be on Monday.