Dr. Peter Roopnarine is Curator of Geology at the California Academy of Sciences. His research explores the relationship between species richness, ecological diversity, and ecosystem resistance to extinction. Studying both marine and terrestrial ecosystems throughout Earth's vast history, Roopnarine’s collections-based research and expertise are aimed at better understanding Earth’s present in order to preserve its future. Roopnarine is Research and Adjunct Professor of Biology and Geosciences at San Francisco State University and a visiting professor at China Institute of Geosciences.