Chief Justice John Roberts, shown in 2010, is still "finding his role as chief justice," says one law professor. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

Notice how some of these tomatoes have unripe-looking tops? Those "green shoulders" are actually the keys to flavor. pocius/Flickr.com hide caption

itoggle caption pocius/Flickr.com

The buildings will be incorporated into a multimillion-dollar construction project on the same site. Doriane Raiman/NPR hide caption

itoggle caption Doriane Raiman/NPR

Officials unveiled an ancient road found during construction of Thessaloniki's new subway system Monday. Nikolas Giakoumidis/AP hide caption

itoggle caption Nikolas Giakoumidis/AP

The 2012 presidential race is getting increasingly negative, but some say that negative ads are part of the democratic process. iStockphoto.com hide caption

itoggle caption iStockphoto.com