The WSJ has an interesting article on the opportunities for natural gas liquids production from the country's shale resources: "The boom has turned into a potential profit center for oil-and-gas producers, as well as for the pipeline companies that transport the fuel. Demand for ethane grew to about 933,000 barrels a day during the first half of 2011, up from 812,000 barrels a day in 2009, according to Bentek Energy. But like the other fuels extracted from remote shale deposits, the biggest problem is how to get it to facilities that can process it." (Note: Subscription may be required.)