Death may be inevitable. But what about aging? If we could figure out what biological switches get flipped to start the process of decline, could we reverse it? Even prevent it? Aging, maybe not surprisingly, happens at the molecular level, explained Anne Brunet , a professor of genetics and co-director of the Paul F. Glenn Laboratories for the Biology of Aging at Stanford University. Brunet recently spoke at the Marine Biological Laboratory's Friday lecture series . “The great challenge of the