President Obama signs a series of executive orders Wednesday about the administration's gun law proposals as Vice President Biden and children who wrote letters to the White House about gun violence look on. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Scientists have found that bilingual seniors are better at skills that can fade with age than their monolingual peers. iStockphoto.com hide caption

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Meredith Was, a senior at the University of Virginia, heads a chapter of the mental health advocacy group Active Minds. Jenny Gold for NPR hide caption

itoggle caption Jenny Gold for NPR

Members of the boys basketball team from Dimond High School in Anchorage, Alaska, celebrate their 2012 state championship victory. Psychological research shows that sports camaraderie improves teenagers' mental health. Charles Pulliam/AP hide caption

itoggle caption Charles Pulliam/AP
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