500 members of Earth's Mars appreciation club gathered at the California Institute of Techology in Pasadena, California last week. The scientists presented and heard the latest research on the red planet. We make two stops in the poster session. Emily Lakdawalla is cheering for the Trojans in her space Q&A segment, and Bruce Betts joins Mat for a special International Conference on Mars edition of What's Up! New trivia contest, too.