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A worker leaves the beach as storm clouds approach Sunday in Grand Isle, La. With BP declaring failure in its latest attempt to plug the uncontrolled gusher feeding the worst oil spill in U.S. history, the company is turning to yet another mix of risky undersea robot maneuvers and long-shot odds to keep crude from flowing into the Gulf. Jae C. Hong/AP hide caption

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Jae C. Hong/AP

U.S. Ambassador to Russia John Beyrle attends the opening of the exhibition devoted to his father, Joseph R. Beyrle, seen in photo at right, in St. Petersburg, Russia, on Feb. 18. The exhibit is currently in Moscow. AP hide caption

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AP

Teens who bum cigarettes every now and then find that addiction can happen before they know it. iStockphoto.com hide caption

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iStockphoto.com