Non-native trout, while prized by anglers who fish the Colorado River below Glen Canyon Dam, threaten to wipe out native species in the river that can't compete with them. While Interior Department officials have a plan to remove the trout, it's effectiveness is being questioned.

Top Interior Department officials, with an eye toward restoring some semblance of natural rhythms to Grand Canyon National Park, on Wednesday announced plans to resume high-flow releases from Glen Canyon Dam into the Colorado River.

If you've ever wanted to get into the national park concessions business, now just might be the time. Officials at the Blue Ridge Parkway are seeking a company to run operations at three locations along the scenic drive.