- ISBN: 9780815307259 | 081530725X
- Cover: Hardcover
- Copyright: 8/1/1998
Did prehistoric humans walk to North America from Siberia? Who were the inhabitants of the spectacular Anasazi cliff dwellings in the Southwest and why did they disappear? Native Americans used acorns as a major food source, but how did they get rid of the tannic acid which is toxic to humans? How does radiocarbon dating work and how accurate is it?