Investigators stand next to evidence markers in front of the house of Matthew Stewart, who was shot and injured by Ogden police during a drug raid, in Ogden, Utah, Jan. 5, 2012. One police officer was killed and five were wounded in the shootout that erupted as a narcotics enforcement team executed a search warrant at Stewart's home. George Frey/Reuters/Landov hide caption

Detweiler was surprised to learn she wasn't eating enough to fuel her training regimen. As an athlete, doctors and nutritionists say, she needed more food variety and more calories — three snacks daily, as well as bigger meals. Courtesy of Nationwide Children's Hospital hide caption

Eat fish or take a fish oil supplement? Research suggests eating fish regularly over a lifetime is good for the brain. But when it comes to staving off cognitive decline in seniors, fish oil supplements just don't cut it, a study finds. iStockphoto hide caption

Carlos Alfaro, 19, practices with a soccer ball before a match in New York City. Some members of his youth soccer team are set to meet with Pope Francis in September. Hansi Lo Wang/NPR hide caption

Donald Trump arrives at the National Federation of Republican Assemblies on Saturday in Nashville, Tenn., ahead of his speech before the conservative group. Mark Humphrey/AP hide caption

Delegates took their seats during the plenary session at the Bonn climate change conference on March 10, 2014. Negotiations resume this week; by the end of the year, the U.N. hopes to have forged a new global agreement. UNclimatechange/Flickr hide caption