If you harbour a sneaking suspicion that men are a herd of ignoble savages, then this book is for you. Authors Wrangham and Peterson will confirm your instincts. It turns out that extremely violent social behaviour is deeply rooted in male human genes and common among our closest male primate relatives. Rapes, beatings and killings are as much a part of life among the great apes as they are among us. The authors try to conclude on some upbeat notes that ring hollow, but their science reveals much about the dark side of human nature.