Natural Resources

"FLAGSTAFF, Ariz. -- The U.S. Environmental Protection Agency has issued its final rule aimed at cleaning up the largest single source of haze-causing pollutants in the country."

"Theodore Roosevelt's Elkhorn Ranch in North Dakota is often called the Walden Pond of the West. But Roosevelt's ranch is now feeling the pressure of an oil boom that is industrializing the local landscape. Critics say a proposed gravel pit and a bridge could destroy the very thing that made such a lasting impression on Roosevelt: the restorative power of wilderness."

As ethnobotanists meet in New York City, they offer reminders that obscure and endangered species should be preserved because they sometimes form the basis of miracle drugs.

"ST. LOUIS -- Illinois rejected an application for a permit for a strip coal mine that opponents claimed would have threatened a tiny village's water supply and various animals in a nearby wildlife area."

"CHARLESTON, W.Va. -- Dealing another blow to the Obama administration's crackdown on mountaintop removal, a federal judge on Tuesday threw out new federal guidance that aimed to reduce water pollution from Appalachian coal mining operations."

"A dramatic gash in the surface of the Earth that could rival the majesty of the Grand Canyon has been discovered secreted beneath Antarctica's vast, featureless ice sheet."