Yellowstone National Park long has been renowned for its "museum quality" cutthroat trout fishery. Sadly, that fishery is in danger of collapse due to non-native lake trout. There are other threats to Yellowstone's fisheries, though, and that's why the park is developing a Native Fish Conservation Plan.

While the Internet is a wonderful tool for research, are some brochures to national parks beginning to rely too much on cyberspace for depth of interpretation? If you compare old and new brochures from Jefferson National Expansion Memorial, it sure seems like it.

If you've ever walked through a national park, hiked down a trail, backpacked into wilderness, or paddled a wild and scenic stream, pause and give a minute of thanks for Stewart Udall.

When Spanish explorer Hernando de Soto arrived in Tampa Bay in 1539 he didn't probably have a kayak, but those watercraft are a great way for present-day visitors to explore the waters of De Soto National Memorial. New ranger-guided kayak tours of the Florida park are now being offered on Saturday mornings. Here's how to sign up for a tour.