US Hydraulic Fracturing, 'Fracking,' Sparks Overseas Interest

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The US has a worldwide advantage in "fracking" to extract natural gas from shale rock. China's one of the countries investing in US projects to learn the technology. Are the benefits worth the risks? We hear how it works and look at the pros and cons. Also, unemployment drops again, and Latin American immigration is changing direction.

Banner image: Opponents and supporters of gas-drilling, or fracking, walk into the last of four public hearings on proposed fracking regulations in upstate New York on November 30, 2011 in New York City. Photo by Spencer Platt/Getty Images