CONTENTS Preface 1 The Animal with the Weirdest Sex Life 2 The Battle of the Sexes 3 Why Don't Men Breast-feed Their Babies? The Non-Evolution of Male Lactation 4 Wrong Time for Love: The Evolution of Recreational Sex 5 What Are Men Good For? The Evolution of Men's Roles 6 Making More by Making Less: The Evolution of Female Menopause 7 Truth in Advertising: The Evolution of Body Signals