In this episode, Scientific American Mind executive editor Mariette Dichristina talks about a special section of the magazine devoted to the roles of gestures and facial expressions in communications. A panel discussion of government secrecy at the annual meeting of the Society of Environmental Journalists featured climate researcher James Hansen; we'll play some highlights from his comments regarding secrecy and science. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this episode include www.sciammind.com; www.sciam.com/news; www.sciam.com/podcast; http://www.columbia.edu/~jeh1/