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Microscopic view of laminated sediments from Lake Oeschinen, Switzerland

Microscopic view of laminated sediments from Lake Oeschinen, Switzerland (Credit: Benjamin Amann, University of Bern)

Microscopic view of annually laminated sediments (‘tree rings of lakes’) from lake Oeschinen, Switzerland. The annual layers were used to estimate the amount of summer rainfall back in time.

Credit: Benjamin Amann, University of Bern

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