In the latest salmonella scare, contaminated peanuts have been linked to deaths and illness, and have landed owners of a peanut-processing plant in front of a House subcommittee. Since 2002, there've been more than half a dozen bacteria-related food contaminations. Guest host Sara Terry explores the vulnerability of the nation's food supply. Also, Commerce Secretary-nominee Gregg pulls out, eroding President Obama's efforts of bipartisanship, and when satellites collide it makes a big mess in space. Wednesday's unprecedented crash has sent out hundreds of chunks of debris that could hit other satellites in orbit.
Banner image: Chairman Bart Stupak (D-MI) (L) watches as Rep. Greg Walden (R-OR)(R) holds up a jar of candy peanut products while questioning Stewart Parnell, owner and president of the Peanut Corporation of America who refused to answer questions during a House Energy and Commerce Committee hearing on Capitol Hill February 11, 2009 in Washington, DC. Photo: Mark Wilson/Getty Images