Wolverines, which, aside from a straggler that passed through Rocky Mountain National Park in 2009, have been missing from Colorado since the early 1900s, but an effort moving through the state's legislature could launch a recovery program for the ferocious carnivores.

The U.S. Bureau of Land Management intends to block a mine road proposed to cross Gates of the Arctic National Park and Preserve in Alaska, determining that there's no evidence the proposed mine could be economically viable.

One of the greatest collections of seabirds can be found at Glacier Bay National Park and Preserve in Alaska, with nearly 300 species and thousands of individual birds flocking to the park's waters and islands. With nesting season for seabirds coming up, the park is temporarily closing four islands to foot traffic and restricting boats from approaching closer than 100 yards to the islands.

A refined mission for the U.S. Bureau of Land Management, one directing the agency to manage its public lands portfolio with less emphasis on resource extraction, is expected to provide benefits to units of the National Park System.