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Obamas arrive in Hawaii for extended Christmas break - but Sasha and Malia look like they are struggling to get into the holiday spirit again (Vacation begins: President Obama shook hands with Admiral Samuel Locklear III, who commands the U.S. Navy in the Pacific, after landing in Peal Harbor, Hawaii, for the family vacation) (Let the (expensive) fun begin: The Obamas are not expected back in the White House until early January - and plan on making the most of a chance to sleep in) (Vacation can be a drag: Malia Obama, left, and Sasha Obama, center, looked less than...

British drug maker GlaxoSmithKline is seeking regulatory approval for the world's first malaria vaccine after trial data showed that it had cut the number of cases in African children. Experts say that they are optimistic about the possibility of the world's first vaccine after the trial results. Malaria, a mosquito-borne parasitic disease, kills hundreds of thousands of people worldwide every year. Scientists say an effective vaccine is key to attempts to eradicate it. The vaccine known as RTS,S was found to have almost halved the number of malaria cases in young children in the trial and to have reduced by...