Bipolar may not be the right diagnosis for some kids, according a panel of experts with the American Psychiatric Association. iStockphoto.com hide caption

Olympic gold medal freestyle skier Nikki Stone now coaches athletes on how to stay calm during the games. Courtesy of Nikki Stone hide caption

An artist's Impression of "Inuk," a 4,000-year-old human whose remains were found in Greenland. Scientists have sequenced most of his DNA using tufts of his hair found in the 1980s. Nuka Godfredsen hide caption