Despite growing up in Kenya, with a vibrant natural world "in our backyard," Lupita Nyong'o says she learned plenty after she signed on to narrate the six-part Discovery Channel documentary Serengeti. Produced and directed by nature doc veteran John Downer and American Idol creator Simon Fuller, Serengeti chronicles daily life on the African plains, achieving a sense of intimacy with the natural world by following the film's animal subjects for more than a year.