Posted on 08/18/2012 11:29:28 PM PDT by SunkenCiv
Ancient pollen and charcoal preserved in deeply buried sediments in Egypt's Nile Delta document the region's ancient droughts and fires, including a huge drought 4,200 years ago associated with the demise of Egypt's Old Kingdom, the era known as the pyramid-building time... said Christopher Bernhardt, a researcher with the U.S. Geological Survey... "Even the mighty builders of the ancient pyramids more than 4,000 years ago fell victim when they were unable to respond to a changing climate," said USGS Director Marcia McNutt. "This study illustrates that water availability was the climate-change Achilles Heel then for Egypt, as it may well be now, for a planet topping seven billion thirsty people."...
The researchers used pollen and charcoal preserved in a Nile Delta sediment core dating from 7,000 years ago to the present to help resolve the physical mechanisms underlying critical events in ancient Egyptian history.
They wanted to see if changes in pollen assemblages would reflect ancient Egyptian and Middle East droughts recorded in archaeological and historical records. The researchers also examined the presence and amount of charcoal because fire frequency often increases during times of drought, and fires are recorded as charcoal in the geological record...
Large decreases in the proportion of wetland pollen and increases in microscopic charcoal occurred in the core during four different times between 3,000 and 6,000 years ago. One of those events was the abrupt and global mega-drought of around 4,200 years ago, a drought that had serious societal repercussions, including famines, and which probably played a role in the end of Egypt's Old Kingdom and affected other Mediterranean cultures as well.
(Excerpt) Read more at sciencedaily.com ...
-——it may well be now, for a planet topping seven billion thirsty people.”-——
The planet has seven billion thirsty people?
Did it stop raining over most of the planet and our razor sharp media forget to tell us ?
:’) That represents a lot of broken glasses in the course of a day.
I thought it was "Sphinx." Then I started thinking about how to spell "sphincter." The aged brain meanders all over the place.
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