Manic, sad, up, down. Your voice may reveal mood shifts. iStockphoto hide caption

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King Richard III, seen here portrayed by actor Paul Daneman in 1962, has often been described as a hunchback. A new study of his skeleton seeks to set the record straight about the monarch's condition. John Franks/Getty Images hide caption

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Whatever name it sailed under — International Sun-Earth Explorer 3, and International Cometary Explorer, among others — this spacecraft has scored a number of firsts over the years, including the first comet flyby. NASA Goddard Spaceflight Center hide caption

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Fishermen drag a net in Lake Malawi in 2012. About the size of New Jersey, the lake is home to hundreds of fish species and is considered one of the most biologically diverse lakes in the world. Ding Haitao/Xinhua/Landov hide caption

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