In the compelling popular science tradition of Sapiens and Guns, Germs, and Steel, a groundbreaking and eye-opening exploration that applies evolutionary science to provide a new perspective on human psychology, revealing how major challenges from our past have shaped some of the most fundamental aspects of our being.

The most fundamental aspects of our lives - from leadership and innovation to aggression and happiness - were permanently altered by the "social leap" our ancestors made from the rain forest to the Savannah.