Everything in nature is regulated—from the number of vital molecules found in our bloodstreams to the number of lions living on an African savanna. Over the past 50 years, two revolutions have occurred in the study of biology that help scientists understand how life is regulated on both of these scales. Dr. Carroll will discuss the discovery of the so-called "Serengeti Rules," which govern the number and kinds of animals and plants that are found in any given place, and talk about how these rules can be applied to restoring ecological health.

Dr. Sean B. Carroll, Professor, Molecular Biology and Genetics, University of Wisconsin; Vice President for Science Education, Howard Hughes Medical Institute