In 2007 researchers at Northwestern’s Cognitive Neurology and Alzheimer’s Disease Center identified a group of people they dubbed “Cognitive SuperAgers.” They’re folks whose minds and memories stay sharp well into their 80s. Late last month a group of SuperAger researchers at Northwestern University’s Feinberg School of Medicine published a study detailing the physical similarities of these brains. Changiz Geula, the study’s senior author and a research professor at the Cognitive Neurology and Alzheimer’s Disease Center, talks to us about it. (Flickr/PacificCove)