If consciousness is what makes us human, memory – it could be argued – is what defines us as individuals. Each of us carries within our brains a unique set of memories that, together, make up our life stories. But how do we remember? That is the question that drives Erin Schuman. Over the past two centuries, biologists have continuously refined our maps of the brain, adding ever more layers and regions. In the past several decades, neurobiologists have begun to map certain functions to those