A relief worker looks over boxes of aid provided by the U.S. on November 14, 2013 in Leyte, Philippines. Proponents of food aid reform say it makes more sense for the U.S. to buy food donations locally than ship them across the globe. Chris McGrath/Getty Images hide caption

Security officer Steven Long patrols the Sequoyah Hills neighborhood in Oakland, Calif. With city police struggling to control crime, several neighborhoods have hired private security to patrol local streets. Justin Sullivan/Getty Images hide caption

French Justice Minister Christiane Taubira has been the object of several racist taunts since she defended the government's gay marriage bill in parliament this spring. She is shown here at the Socialist Party's "Universite d'ete" in La Rochelle, in August. Stephane Mahe/Reuters/Landov hide caption

The plate on the left contains about equal numbers of colonies of two different bacteria. After the bacteria compete and evolve, the lighter ones have taken the lead in the plate on the right. Courtesy of Michael Wiser hide caption

Trout fishing is big business in Montana, bringing in tens of millions of dollars annually. Tom Murphy/Getty Images/National Geographic hide caption

New York City subway conductor Paquita Williams (left) and passenger Laura Lane became friends after a two-hour train breakdown. StoryCorps hide caption

Robert Shiller and Eugene Fama shared this year's Nobel Memorial Prize. AP hide caption