Chu speaks at press conference at CGI America in Chicago
U.S. Secretary of Energy Stephen Chu speaks to reporters during a press conference at the CGI America meeting on June 30, 2011 in Chicago. Chu announced the Better Buildings Challenge Thursday, a program part of the Obama Administration's Better Building Initiative launched in February to catalyze private sector investment in commercial building upgrades with a goal of increasing energy efficiency by 20 percent in the next 10 years. UPI/Brian Kersey
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