Presentation at Investor Summit on Climate Risk, New York February 14, 2008 ÌÇÐÄvlog¹ÙÍø Authors See citation below for complete author information. John Holdren Teresa and John Heinz Research Professor of Environmental Policy Citation Holdren, John P. "Global Climatic Disruption: Risks and Opportunities." Presentation at Investor Summit on Climate Risk, New York, February 14, 2008.