Eggs themselves are remarkably resistant to germs like salmonella. The shell and proteins in the egg white normally do a good job of fending off pathogens. But eggs laid by a bird infected with salmonella will likely be infected, too. Courtesy of John Ingraham hide caption

itoggle caption Courtesy of John Ingraham

Shaun Parker moved from Menasha, Wis., to Los Angeles to pursue a career in film nearly 20 years after his initial plans were derailed by an illness in the family, but he never lost the determination to craft his own life story. At the end of his life, Parker says, he wants to be able to say, "I was part of something that moved you." Katie Falkenberg for NPR hide caption

itoggle caption Katie Falkenberg for NPR

Through the lens of evolution, a belief in God serves a very important purpose: Religious belief set us on the path to modern life by stopping cheaters and promoting the social good. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Natural-Born Storyteller? Shaun Parker moved from Menasha, Wis., to Los Angeles nearly 20 years after an illness in his family put his adolescent dreams on hold. "I liked the idea that I was meant to be something more," Parker says. "I always said that we're kind of the sum total of the decisions we make in life, and I just felt like I could very easily make the decisions that lead me away from that path of being more, whatever it is." Katie Falkenberg for NPR hide caption

itoggle caption Katie Falkenberg for NPR

Robert O'Rourke was diagnosed with idiopathic pulmonary fibrosis in late 2006.  The lung disease causes scarring in the lungs, which makes breathing difficult. There's no cure yet, and researchers aren't certain what causes the disease. Courtesy of Robert O'Rourke hide caption

itoggle caption Courtesy of Robert O'Rourke

Food safety experts traced the salmonella outbreak to Wright County Egg, near Galt, Iowa, which is one of two companies whose eggs are believed to have been contaminated. More than 500 million eggs have been recalled. Nirmalendu Majumdar/AP hide caption

itoggle caption Nirmalendu Majumdar/AP

A New York Times/CBS News poll found that 30 percent of people under 45 said the use of devices like smart phones and personal computers has made it harder to concentrate. iStockphoto.com hide caption

itoggle caption iStockphoto.com