"Peter M. Sadler, a professor of geology at the University of California, Riverside, has received two prestigious honors: He has been awarded the 2012 ICS Medal of the International Commission on Stratigraphy (ICS) for his high-quality research in stratigraphy, the branch of geology that studies rock layers as an archive of Earth history; and he has been selected to deliver the 2012 William Smith Lecture of the Geological Society of London, the oldest geological society in the world."