
He approaches each in the best scientific tradition, carefully sifting the evidence, never jumping to hasty conclusions, giving everyone a fair hearing - the experts and the amateurs the accounts of the Indians and their conquerors. Mann navigates adroitly through the controversies. New archaeological discoveries and interpretations of Indian materials are constantly altering the historical record, and every debate comes equipped with its own bevy of archaeologists, anthropologists and other social scientists tossing around personal invective with the abandon of Rudy Giuliani on a bad day. There is little or no agreement about when their ancestors first came to the Americas and where they came from how many there were, how and where they lived and why they were not more effective in resisting the European invasion. Nearly everything about the Indians is currently a matter of contention.

This would be a formidable task under any circumstance, and it is complicated by the fact that so much of the deep American past is embroiled in vituperative political and scientific controversies. Mann, a science journalist and co-author of four previous books on subjects ranging from aspirin to physics to the Internet, provides an important corrective - a sweeping portrait of human life in the Americas before the arrival of Columbus. Because history is change, they were people without history." For cultural reasons of their own, Europeans and white Americans have "implicitly depicted Indians as people who never changed their environment from its original wild state. Mann points out in his marvelous new book, "1491: New Revelations of the Americas Before Columbus," is that they are essentially dehumanizing. The trouble with all such stereotypes, as Charles C.

Small wonder that, right up to the present day, American Indians have usually been presented as either underachieving metahippies, tree-hugging saints or some combination of the two. MOST of us know, or think we know, what the first Europeans encountered when they began their formal invasion of the Americas in 1492: a pristine world of overwhelming natural abundance and precious few people a hemisphere where - save perhaps for the Aztec and Mayan civilizations of Central America and the Incan state in Peru - human beings indeed trod lightly upon the earth.
