Changes in the orientation of archaeological research in the post-World War n period affected Maya studies. The cultural ecological perspective, which was rising to prominence, put an old debate in bold relief: How had this prehistoric civilization adapted to the tropical forest environment? How could swidden cultivation have sustained the unexpectedly high population densities that settlement pattern studies appeared to be revealing? Had the ancient Maya practiced some from of intensive agriculture? Archaeologist Dennis E. Puleston went to the Maya Lowlands to investigate geographer Alfred...