Laborers for Brazilian construction company Odebrecht work on a construction site in Luanda, Angola, in January 2010. Odebrecht is among the major Brazilian companies that are expanding the South American country's economic influence around the world. Issouf Sanogo/AFP/Getty Images hide caption

Chef Jacob Kenedy created the recipes for the book — and says he struggled with some of them, like the dischi volanti.. Suzanne Mitchell hide caption

President Obama holds a conversation Wednesday in the backyard of Jeff and Sandy Clubb in Des Moines, Iowa. Tim Sloan/AFP/Getty Images hide caption

A National Science Foundation artist's drawing shows the inner four planets orbiting Gliese 581, a red dwarf star just 20 light-years from Earth. The newly discovered planet, in the foreground, has a 37-day orbit and, like Earth, is distant enough from the star for liquid water to exist. Lynette Cook hide caption

The Marine Band performs on the Fourth of July in front of the White House. Mandel Ngan/AFP/Getty Images hide caption

Veteran director Arthur Penn (pictured at the Berlin Film Festival in 2007) died Sept. 28. He was the guiding hand on classic movies including The Miracle Worker and Bonnie and Clyde. John MacDougall/AFP/Getty Images hide caption