If you thought round gobies and zebra mussels were scary invaders of the Great Lakes, brace yourself for the arrival of Asian carp, a voracious fish that could decimate the lakes' native fisheries.

In a sign of bipartisan meddling when it comes to how the national parks should be managed, the House of Representatives has passed legislation that could force the National Park Service to tweak wilderness boundaries and rebuild a road in North Cascades National Park. The chamber's majority was evidently unmoved by a Park Service analysis that best interests of taxpayers and the park would be served by not rebuilding the Upper Stehekin Road.

There long have been pockets of disgust over federal land ownership in the West, and perhaps nowhere are those sentiments stronger than in Utah, where roughly two-thirds of the landscape is federally managed. While the "Sagebrush Rebellion" mightily reared its head some three decades ago, its waning vestiges are on trial this week over whether a creek bed constitutes a road in Canyonlands National Park.

In somewhat of a surprise, county planners in northern Virginia have voted to oppose the development of a Wal-Mart Supercenter on hallowed land abutting the Fredericksburg and Spotsylvania National Military Park. But that's only a temporary victory for those who oppose the project.