Arianna Huffington, president and editor-in-chief of The Huffington Post Media Group, speaks at the 2014 World Economic Forum. Reporters and editors in 15 countries will contribute to "What Works," her site's new initiative focused on covering positive news. Ruben Sprich/Reuters/Landov hide caption

itoggle caption Ruben Sprich/Reuters/Landov

Republican presidential nominee Mitt Romney and President Obama spar over energy policy during the second presidential debate at Hofstra University on Tuesday. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP