Scientists sieving a midden to determine its contents. By collecting the shells, bones, pollen and charcoal from a midden, scientists are able to determine not only what people ate but how long ago this rubbish was left.
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Scientists sieving a midden to determine its contents. By collecting the shells, bones, pollen and charcoal from a midden, scientists are able to determine not only what people ate but how long ago this rubbish was left.
