In Making Sense of Sex, the husband and wife team of David Barash, an evolutionary biologist, and Judith Lipton, a clinical psychiatrist, draw on their respective areas of expertise to explore and explain the central fact of our existence-that men and women are fundamentally, unalterably different. They present an eye-opening and wide-ranging consideration of what those differences are, how they came to be, why they are important, and what they mean in our everyday lives.