Roger A Rosenblatt MD, MPH, MFR is Professor and Vice Chair of the Department of Family Medicine at the University of Washington School of Medicine, and an adjunct Professor of Health Services in the School of Public Health and Community Medicine. A member of the Institute of Medicine, Dr. Rosenblatt is a family physician, health services researcher, and forest ecologist. This lecture reflects his interest in the impact of global environmental change on human populations( and vice versa).