The Ecology Hour goes viral this week when hosts Bob Spies and Tim Bray talk with Dr. Tony Goldberg, veterinarian and pathobiologist at the University of Madison-Wisconsin. He studies viruses and the diseases they can cause in everything from mussels to humans, everywhere from the Appalachians to Africa. He particularly focuses on "zoonautic" diseases - those that can jump from one species to another. In a fascinating and surprisingly humorous conversation, we learn many amazing things about both the hosts and the viruses.