Annual Review of Environment and Resources Vol. 31, Pages 193-237 November 2006 HKS Authors See citation below for complete author information. John Holdren Teresa and John Heinz Research Professor of Environmental Policy Citation Gallagher, Kelly Sims, John P. Holdren, and Ambuj D. Sagar. "Energy Technology Innovation." Annual Review of Environment and Resources 31 (November 2006): 193-237.