Montgomery, David2011-06-032011-06-032008-02-14http://hdl.handle.net/1773/16567Montgomery will review the importance of soil in sustaining civilizations. He will ask the question: can soil erosion limit the lifespan of civilizations? He will discuss contemporary and long-term (geological) erosion rates -- and agricultural erosion rates in particular.en-USsoilsoil sciencesoil erosion modelssoil erosionerosion controlsoil conservationsoil managementplowingsediment transportsediment depositiongeologysoil weatheringwaterPresentation