This remarkable book is the most ambitious work on mythology since that of the renowned Mircea Eliade, who all but single-handedly invented the modern study of myth and religion. Focusing on the oldest available texts, buttressed by data from archeology, comparative linguistics and human population genetics, Michael Witzel reconstructs a single original African source for our collective myths, dating back some 100,000 years. Identifying features shared by this "Out of Africa" mythology and its northern Eurasian offshoots, Witzel suggests that these common myths--recounted by the communities...