Engaging, mentally stimulating work is good for the brain, scientists say, whether you get paid to do it or not. Running a household can be as mentally demanding as running a company. iStockphoto hide caption

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Proponents of the terminal plan say it would bring economic development to the Vancouver area, just across the Columbia River from Portland, Ore. Conrad Wilson/OPB News hide caption

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An oil well in Garden City, Texas. With prices plunging, oil companies are laying off thousands of workers. Spencer Platt/Getty Images hide caption

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Job hunters line up for interviews at an employment fair in New York City. The unemployment rate tells only a partial story about the U.S. labor market. Mark Lennihan/AP hide caption

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Third-year medical student Allie Tetreault, left, talks with Gabrielle Nuki, 16, at Maine Medical Center in Portland, Maine. Gabrielle helps med students practice patient care. Patti Wight/MPBN hide caption

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Mike Smith, of Long Beach, Calif., now pays $200 for his family's health insurance policy, compared with the $3,000 a month he would have had to pay on the individual market last year. Stephanie O'Neill for NPR hide caption

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