Last updated on: 8/16/2012 | Author: ProCon.org

Is human activity a substantial cause of global climate change?

Is human activity a substantial cause of global climate change? – Read new pro and con statements from James E. Hansen, PhD, Director of the Goddard Institute for Space Studies at NASA (Pro), and John R. Christy, PhD, Professor of Atmospheric Science and Director of the Earth System Science Center at the University of Alabama at Huntsville (Con), as well as statements from 18 other individuals and organizations.