New York Times science reporter Nicholas Wade explores what mapping the human genome is revealing about the controversial and often contentious idea that there is a biological difference between races. Time movie critic Richard Corliss talks about how Hollywood has celebrated and vilified motherhood over the years. Stacey D’Erasmo discusses her novel, Wonderland. Scott Sherman talks about why the NYPL has abandoned the renovation plans for its 42nd Street building. We’ll find out about the most radioactive property in Queens, which has just been designated as a Superfund site. Plus, Clara Moskowitz, Associate Editor at Scientific American, on the discovery of a new super heavy atomic element.