How goat grazing is helping the fight against invasive species

Goat grazing is gaining popularity as a way to help remove invasive species. However, there are concerns that goats may actually be spreading the invasive species they graze on via their feces.  University of Minnesota researchers recently studied this topic.  Will spoke with study lead Katherine Marchetto, a postdoctoral associate in the  College of Veterinary Medicine to find out what they learned.