From the authors of New York Timesbestseller The Genius of Dogscomes a new popular science book about how 'friendliness' is in fact the key factor in the survival of our species. In exploring this hugely ambitious topic, Hare and Woods present an elegant new theory called self-domestication, looking at animal (mainly dog and ape) examples of cooperation and empathy and what this can tell us about the evolutionary success of Homo sapiens It has huge implications for our society today.