In our January history program, we look at how parasites have affected human life on earth. Some of these parasites are nematode worms and they affect over 1.5 billion people worldwide. Although these parasites are not present in humans in Iowa, they are present in dogs, cats, domestic and wild animals, including horses. Guests are Dr. Richard J. Martin, Prof. of Pharmacology at Iowa State; Dr. Lyric Bartholomay, Prof. of Entomology at Iowa State; and discussing the use of nematode parasites to treat human disease, Dr. David Elliott, Prof. of Gastroenterology at the University of Iowa.