Contents

20 August 1993
Vol 261, Issue 5124

About The Cover

Excavation in 1989 of the Lower Town of Tell Leilan, a large third millennium city in northern Mesopotamia (present-day northeast Syria); the excavation exposed 600 square meters of an urban street and a residential area occupied from 2600 to 2200 B.C. After a volcanic event, which deposited tephra on the roofs of these houses, and a subsequent abrupt change in climate, much of northern Mesopotamia was abandoned. See page 995 and the News story on page 985. [Photo: Anwar abd el-Ghafour]