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NEW ORLEANS, LA - JULY 13: (***EXCLUSIVE*** PREMIUM PRICING APPLIES, MUST CALL; U.S. TABS OUT) Actor Brad Pitt visits the Lower Ninth Ward of New Orleans during a trip to lobby government officials to increase the speed of re-construction on July 13, 2006 in New Orleans, Louisiana. Pitt and Global Green USA created a sustainable design architecture competition to showcase affordable, energy-efficient construction. The competition drew entries from around the world. (Photo by Mark Mainz/Getty Images)

NEW ORLEANS, LA - JULY 13:  (***EXCLUSIVE*** PREMIUM PRICING APPLIES, MUST CALL; U.S. TABS OUT)  Actor Brad Pitt visits the Lower Ninth Ward of New Orleans during a trip to lobby government officials to increase the speed of re-construction on July 13, 2006 in New Orleans, Louisiana. Pitt and Global Green USA created a sustainable design architecture competition to showcase affordable, energy-efficient construction.  The competition drew entries from around the world. (Photo by Mark Mainz/Getty Images)

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NEW ORLEANS, LA - JULY 13: (***EXCLUSIVE*** PREMIUM PRICING APPLIES, MUST CALL; U.S. TABS OUT) Actor Brad Pitt visits the Lower Ninth Ward of New Orleans during a trip to lobby government officials to increase the speed of re-construction on July 13, 2006 in New Orleans, Louisiana. Pitt and Global Green USA created a sustainable design architecture competition to showcase affordable, energy-efficient construction. The competition drew entries from around the world. (Photo by Mark Mainz/Getty Images)

NEW ORLEANS, LA - JULY 13:  (***EXCLUSIVE*** PREMIUM PRICING APPLIES, MUST CALL; U.S. TABS OUT)  Actor Brad Pitt visits the Lower Ninth Ward of New Orleans during a trip to lobby government officials to increase the speed of re-construction on July 13, 2006 in New Orleans, Louisiana. Pitt and Global Green USA created a sustainable design architecture competition to showcase affordable, energy-efficient construction.  The competition drew entries from around the world. (Photo by Mark Mainz/Getty Images)