The domestication of plants and animals was one of the greatest steps forward taken by mankind. Although it was first achieved long ago, we still need to know what led to it and how, and even when, it took place. Only when we have this understanding will we be able to appreciate fully the important social and economic consequences of this step. Even more important, an understanding of this achievement is basic to any insight into modern man's relationship to his habitat. A change in methods of investigating these events has taken place, due to the mutual realization by archaeologists and...