Fans of Star Trek long ago noted that anonymous security officers who accompanied the show's stars rarely survived the experience. Shortly after being beamed down, they would be vaporized, stomped or eaten for dramatic effect. It's a plot device so common that these expendable crewmen became known collectively as redshirts.
In his novel Redshirts, science fiction writer John Scalzi follows Andrew Dahl, a similarly expendable ensign as he sorts out this life-expectancy issue.
Investigators have yet to rule out arson as they continue to look for the cause of Colorado's Waldo Canyon fire, the most destructive wildfire in state history. Former FBI agent Brad Garrett and forensic psychologist N.G. Berrell talk about the process of investigating fires and the profile of an arsonist.
A day after Republican presidential candidate Mitt Romney spoke to the nation's oldest civil right organization, Vice President Joe Biden appeared at the NAACP's annual convention. He quickly tackled one issue that drew Romney sustained boos — the 2010 health care overhaul.
Biden appeared in place of President Obama, who made a brief videotaped address thanking the group for its work. He walked out to warm applause, and several of his remarks were interrupted by shouts of agreement.