The last building block of the Obama administration's strategy unveiled Wednesday to keep the northern spotted owl from extinction nearly doubles the amount of Northwest national forest land dedicated to protecting the bird by the Bush administration four years ago.
A half mile below the ground at Prudhoe Bay, above the vast oil field that helped trigger construction of the trans-Alaska pipeline, a drill rig has tapped what might one day be the next big energy source.
They have appealed the City Council's approval of the project to a state land use board, and are threatening to file a federal lawsuit claiming the project threatens endangered salmon and clean water in the Columbia River.
A group that teaches people to track animals in the wild has snapped photographs that appear to show a rare mountain fox found in Northern California but long thought to be gone from Oregon's Cascade Range.
Scientists studying white nose syndrome in bats estimate the fungal ailment has killed at least 5.7 million bats in 16 states and Canada, providing alarming new numbers about the scope of its decimation.
U.S. officials illegally allowed a Canadian company to begin preparing the route for its proposed 1,700-mile-long oil pipeline from western Canada to Texas even though the project hasn't gained final government approval, three conservationist groups...
A federal agency's decision allowing Shell Oil Co. to move a step closer to drilling in Arctic waters off Alaska has drawn criticism from conservationists, expressing concern over how any potential oil spill would be handled.
The giant Palouse earthworm will not be listed for protection under the Endangered Species Act because recent information indicates the worm might be more widespread than previously thought, the U.S. Fish and Wildlife Service said Monday.
Alaska Native groups worried about losing tax revenues and royalties from oil development filed a lawsuit Friday challenging the federal government's designation of critical habitat for threatened polar bears on the state's oil-rich North Slope.