miércoles, 16 de febrero de 2011

Tree Rings Reveal Empire's End

Tree Rings Reveal Empire's End:

In wet times, Angkor, the Khmer capitol thrived. Dry times coincided with its demise.

Studying tree rings has revealed a record of wet and dry times that helps make sense of the mysterious and gradual demise of Angkor, the capitol of the Khmer Empire in Cambodia from the 9th to 14th ...


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Provided by National Science Foundation