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. hide caption

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David Schulte, a marine biologist with the U.S. Army Corps of Engineers, is trying to engineer a recovery for Chesapeake Bay oysters. He has developed a small reef area to provide a habitat for oysters in one of the bay's tributaries. Elizabeth Shogren/NPR hide caption

itoggle caption Elizabeth Shogren/NPR

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 loggerhead turtle was found oiled in the Gulf waters. It was cleaned on-site, then sent to Mote Marine Laboratory in Sarasota, Fla., for rehabilitation and monitoring. Christopher Joyce/NPR hide caption

itoggle caption Christopher Joyce/NPR

Liam, a capuchin monkey, will respond differently to a simple test if another monkey receives a more favorable food reward for performing the same task. Laurent Pretot hide caption

itoggle caption Laurent Pretot

Alex, the famous African gray parrot, learned elements of the English language and shattered the notion that parrots are only capable of mimicking words. Scientists believe human language may have evolved from hand signals and song. NPR hide caption

itoggle caption NPR

The prairie dog plague has led to massive prairie dog deaths, scaring nearby human communities for the last 60 years. Barbara Sax//AFP/Getty Images hide caption

itoggle caption Barbara Sax//AFP/Getty Images