The Bush Administration has expedited permits for leasing land to oil and gas developers along the Front Range of the Rocky Mountains. This area -- most of which is owned by the federal government -- is rich in natural gas, and new technology has made harvesting that gas possible. Growing demand for a clean, domestically produced energy source has pushed up prices, setting off a drilling bonanza. That's been good for some, but as Nightline discovered, it's also intensely angered ranchers, sportsmen and environmentalists who worry about the effects on the wildlife and their way of life. Nightline looks at the intensive natural gas development surrounding the town of Pinedale, Wyoming, nestled in the Upper Green River Valley.