Ecologists Warn: Leave This Killer Wasp Alone - NBC4 Washington

    Why You Should Leave This Killer Wasp Alone

    A type of killer wasp has moved into the Chicago area, but they're not after humans. Rob Elgas reports. (Published Wednesday, Aug 21, 2013) A type of killer wasp has moved into the Chicago area, but they're not after humans. Rob Elgas reports. See More