THIS BOOK ANSWERS THE MOST OBVIOUS, THE MOST IMPORTANT, YET THE MOST DIFFICULT QUESTION ABOUT HUMAN HISTORY: WHY HISTORY UNFOLDED SO DIFFERENTLY ON DIFFERENT CONTINENTS. GEOGRAPHY AND BIOGRAPHY, NOT RACE, MOULDED THE CONTRASTING FATES OF EUROPEANS, ASIANS, NATIVE AMERICANS, SUB-SAHARAN AFRICANS, AND ABORIGINAL AUSTRALIANS. AN AMBITIOUS SYNTHESIS OF HISTORY, BIOLOGY, ECOLOGY AND LINGUISTICS, GUNS, GERMS AND STEEL IS ONE OF THE MOST IMPORTANT AND HUMANE WORKS OF POPULAR SCIENCE.