Daniela Chavarriaga holds her daughter Emma as Dr. Jose Rosa-Olivares administers a measles vaccination at Miami Children's Hospital. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

NPR's Robert Siegel and Michael Minielly, a Mercedes-Benz representative, drive a new S550 4Matic, which allows for semi-autonomous driving. Rob Ballenger /NPR hide caption

itoggle caption Rob Ballenger /NPR

Lena Dunham's new collection of personal essays about her relationships, friendships and obsessive-compulsive disorder has received rave reviews. Autumn de Wilde/Courtesy of Random House hide caption

itoggle caption Autumn de Wilde/Courtesy of Random House

Paul Theroux is known for both his fiction and travel writing. His books include The Great Railway Bazaar and The Old Patagonian Express. Steve McCurry/Courtesy of Houghton Mifflin Harcourt hide caption

itoggle caption Steve McCurry/Courtesy of Houghton Mifflin Harcourt