Explores The Question Of What In The Less Than Two Percent Of Genes Has Made Humans Different From Apes. Pt. 1. Just Another Species Of Big Mammal. A Tale Of Three Chimps -- The Great Leap Forward -- Pt. 2. An Animal With A Strange Life Cycle. The Evolution Of Human Sexuality -- The Science Of Adultery -- How We Pick Our Mates And Sex Partners -- Sexual Selection, And The Origin Of Human Races -- Why Do We Grow Old And Die? -- Pt. 3. Uniquely Human. Bridges To Human Language -- Animal Origins Of Art -- Agriculture's Mixed Blessings -- Why Do We Smoke, Drink, And Use Dangerous Drugs? -- Alone In A Crowded Universe -- Pt. 4. World Conquerors. The Last First Contacts -- Accidental Conquerors -- Horses, Hittites, And History -- In Black And White -- Pt. 5. Reversing Our Progress Overnight. The Golden Age That Never Was -- Blitzkrieg And Thanksgiving In The New World -- The Second Cloud. Jared Diamond. Includes Bibliographical References And Index.