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Pollen analysis reveals ancient Egyptian climate

Analysis of pollen and charcoal deposits in the Nile Delta have revealed a record of climate catastrophes in Ancient Egypt, including a massive drought which may have lead to the downfall of Egypt's Old Kingdom. Scientists with the US Geological Survey (USGS) and the University of Pennsylvania expected that they would

Tree rings shed light on ancient Mexican droughts

Researchers are studying tree rings in Mexico and Central America to determine the effect of droughts on ancient civilizations. One large ancient drought previously confirmed in the U.S. Southwest between 1149 and 1167 is shown to have extended into central Mexico, where it may have devastated maize crops, potentially giving a

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