Richard J. Norby is a Corporate Research Fellow in the Environmental Sciences Division and Climate Change Science Institute of the Oak Ridge National Laboratory, and Joint Professor in the Bredesen Center for Interdisciplinary Research and Graduate Education of the University of Tennessee-Knoxville. He is a physiological ecologist with interests in tree growth, forest ecology, carbon and nitrogen cycling, and ecosystem responses to atmospheric and climatic change. He has been conducting experiments on the responses of trees and forests to elevated atmospheric CO2 since 1982, with an emphasis on belowground responses, and was the principal investigator of the Oak Ridge Free-Air CO2 Enrichment (FACE) Experiment (http://face.ornl.gov). He currently is task leader for Nutrient Biogeochemisty in the multi-lab NGEE-Tropics project (http://esd1.lbl.gov/research/projects/ngee_tropics/); task leader for Sphagnum research on the SPRUCE project, a large-scale manipulation experiment in a spruce peat bog in northern Minnesota (http://mnspruce.ornl.gov/); and member of the Scientific Steering Committee of the Amazon FACE experiment (http://amazonface.org/). Norby has a B.A. in chemistry from Carleton College and a Ph.D. in Forestry and Botany from the University of Wisconsin. He is a member of the Ecological Society of America, the Association of Tropical Biology and Conservation, and the American Geophysical Union, and in 1995 was elected fellow of the American Association for the Advancement of Science. Norby is an editor of New Phytologist and a member of the Board of the New Phytologist Trust.