Walking through many national parks in winter can be tricky. In Yellowstone National Park, for instance, the boardwalks through geyser basins can be snow-and-or-ice-covered, hiking trails in Grand Canyon National Park can be icy, and trails in countless other parks that experience snowy winters can be slippery. These are definitely instances when you need good footing.

An international team of scientists has concluded that mining in the "Canadian Flathead" north of Glacier National Park would harm both Glacier and the adjoining Waterton Lakes National Park in Canada.

For most of us, a trip to Hawaii and its national parks is not a spur-of-the-moment adventure. But that's not to say you can't keep an eye on the Big Island's two active volcanoes from the comfort of your home.

Engineers say it will take six weeks to rebuild a 100-foot-long stretch of the Hurricane Ridge Road in Olympic National Park that collapsed the other day.