A barefooted runner takes to the streets. Charlie Riedel/AP hide caption

Pope Benedict XVI arrives to preside over the celebration of Vespers at the Basilica of St. Paul Outside the Walls in Rome on Monday. Alessandra Tarantino/AP hide caption

University of Florida quarterback Tim Tebow embraces his mother, Pam, during a November 2009 pre-game ceremony before an NCAA college football game against Florida State. The two are set to appear in a controversial anti-abortion ad that will air during the Super Bowl. Phil Sandlin/AP hide caption

An artist's rendition of two Sinosauropteryx dinosaurs, showing their short, bristle-like feathers along the midline of the head, neck, back and around the tail, forming irregular stripes. Chuang Zhao and Lida Xing hide caption