Peter RavenPeter Raven is the President Emeritus of Missouri Botanical Garden and the George Engelmann Professor of Botany Emeritus at Washington University, St Louis. He is a Member of the National Academy of Sciences, Foreign Member of the Royal Society, and ember of the Pontifical Academy of Sciences. He won the Volvo Environment Prize in 1992, the International Cosmos Prize in 2003, and the National Geographic Society's Hubbard Medal in 2018. Read More Read Less