Author Daniel Yergin on U.S. Need for a 'Diversified...

Aired: 12/23/2011 | 0:08:23 | Clip
Amid concern over tensions and violence in Iraq and Syria, oil prices rose to nearly $100 a barrel Friday. Jeffrey Brown discusses the ongoing hunt for untapped reserves of energy and how the demand for energy has shaped political and economic change around the globe with Daniel Yergin, author of "The Quest" and "The Prize."

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