Academy Governor and former Board of Governors Vice Chair Bruce S. McEwen is the winner of the 2011 Edward M. Scolnick Prize in Neuroscience. Work by Prof. McEwen and his colleagues has shown that in the hippocampus, chronic stress causes neurons to undergo a remodeling of dendrites, changes that are largely reversed once the stress is removed, at least in young adult animals. “Bruce has made pioneering discoveries about the effects of stress hormones on the brain,” says Marc Tessier-Lavigne, president of The Rockefeller University and a member of the Academy’s President’s Council.