Bob Costas previews the Beijing Olympics and the obstacles NBC will face

Plus, do doom-and-gloom perceptions match reality? Oliver Darcy and Catherine Rampell discuss "negativity bias in the media." Later, Jeffrey Toobin previews Sarah Palin v. New York Times; John Harris discusses the importance of media institutions; and Brian Stelter visits a middle school where students are learning about news literacy. To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices