Dr. Arch Johnston has spent decades fighting invasive plant species in Lichterman Nature Center, from privet to kudzu to wisteria.  With Dr. Johnston's help, we take a closer look at these species, from their purposeful introduction to the reasons they so thoroughly outcompete native species.  We also discuss how to remove and control these plants so that you can help defend your neighborhood against these alien invaders.  Hosted by Dr. Dawn Manning, Luke Ramsey, and Rachel Dickerson. Produced by Katie Quinlan.  Music by Purple Planet and Sully Allen.