Construction crews work on a new home built by the Make it Right Foundation in New Orleans' Lower Ninth Ward, May 2009. More than four years after Hurricane Katrina, much of the city remains in survival mode. Mario Tama/Getty Images hide caption

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The inventor of the electronic cigarette, Hon Lik smokes his invention in Beiijng on May 25, 2009. Also known as an 'e-cigarette', the battery-powered device is designed as an alternative to cigarettes, cigars and pipes, and provides inhaled doses of nicotine by delivering a vaporized propylene glycol/nicotine solution, while also providing the physical sensation and flavors similar to inhaled tobacco smoke. Frederic J. Brown/AFP/Getty Images hide caption

itoggle caption Frederic J. Brown/AFP/Getty Images