President Obama, speaking at the White House in January, is surrounded by some of his economic advisers at the time including Christina Romer, Timothy Geithner and Lawrence Summers. The president is now considering candidates to direct the National Economic Council when Summers departs later this year.
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Albert Einstein's theory of relativity challenges how we perceive time in our everyday lives. Now, researchers have a device precise and accurate enough to measure its effects in the laboratory.
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Mexican policemen and soldiers guard the place where the bodies of two alleged kidnappers remain after being killed by an angry mob in Ascencion, Mexico, on Tuesday.
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