Science: Cache in the Cornfield

When he was told that the little cornfield on the banks of the Illinois River was strewn with old Indian arrowheads and pottery shards, Northwestern University Archaeologist Stuart Struever decided to do a little spadework, hoping to unearth an ancient Indian settlement. What he found exceeded his wildest expectations. The plot, owned by a farmer named Theodore Koster, may well hold some of the most important archaeological remains ever discovered in North America.

Excavating steadily for the past five summers in Koster's cornfield, which is 45 miles north of St. Louis, Struever's team has...

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