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Natural gas is a cleaner burning source of energy than coal, and the nation has a lot of it. But it's still a finite resource, and drilling for it has environmental drawbacks. This rig, in Wyoming's Jonah field, sits on massive wooden mats in an attempt to protect the vegetation underneath.

Last updated October 17 2008: 11:39 AM ET
Drill baby U.S.A. rocks Wyoming Take a look at how big oil and gas companies are transforming lives in a small cow-town. More
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