On the lookout for SARS, an employee checks a baby's temperature at the Ben Gurion Airport in Israel, in 2003. The deadly virus quickly spread around the world once it reached Hong Kong, a central travel hub. Nir Elias/Reuters/Landov hide caption

itoggle caption Nir Elias/Reuters/Landov

Romero is detained at a county park near McAllen, Texas, after wading across the Rio Grande. He says he left Central America to avoid conscription by street gangs and to join his family in the U.S. John Burnett/NPR hide caption

itoggle caption John Burnett/NPR

Chuck Hammers, owner of Pizza My Heart in San Jose, Calif., raised prices on slices by 25 cents and pies by about $1 after the minimum wage increase, and says he hasn't experienced a drop in business. Kirk Siegler/NPR hide caption

itoggle caption Kirk Siegler/NPR

President Obama at the news conference in Brussels at which he was asked if he had second thoughts about how he and his aides handled the Bergdahl deal announcement. British Prime Minister David Cameron is in the background. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP