United States Secretary of Energy Chu answers questions during his special address at the CERAWeek 2010 energy conference in Houston

 
United States Secretary of Energy Chu answers questions during his special address at the CERAWeek 2010 energy conference in Houston
United States Secretary of Energy Steven Chu answers questions during his special address at the CERAWeek 2010 energy conference in Houston March 9, 2010. Saudi Arabia has close to 4 million barrels per day of spare crude oil production capacity on hand, the chief executive of the kingdom's state-owned oil company said on Tuesday. REUTERS/Richard Carson (UNITED STATES - Tags: BUSINESS ENERGY)