A blogger at nature.com has an interesting post about Bush's latest attempts at environmentalism in the Pacific. He also links to a story about trash piling up in a Bush-approved protected area in Hawaii:

Ocean currents are still bringing an estimated 57 tons of garbage and discarded fishing gear to the 10 islands and the waters surrounding them each year. ... Debris removal, meanwhile, has fallen to 35 tons a year since the islands became a monument, about a third of the 102 tons that boats and divers collected on average before that, including junk that was already there.

The Mises Institute has a great Murray Rothbard lecture that explains the essential link between private property and conservation; that is, the state is bad at conservation.