43:31 duration 43 minutes 31 seconds
Dr. T. Scott Sillett
Smithsonian’s National Zoo and Conservation Biology Institute“Demographic & behavioral responses of a migratory songbird to climate variation.”
55:18 duration 55 minutes 18 seconds
Dr. Thea Edwards
Dr. Thea Edwards, University of the South “Beyond Eutrophication: Is Nitrate an Endocrine Disruptor?”