Oh...all old Egypt stuff on Discovery Channel...first was like the ten greatest discoveries...now why the Old Kingdom collapsed....
Dr. Hassan thinks maybe the Nile stopped flooding...brb...
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It shows equatorial Africa experienced a prolonged period of drought.
It is possible, scientists say, this was the reason some of the first humans left Africa to populate the globe.
It is possible, scientists say, this was the reason some of the first humans left Africa to populate the globe.
Ancient drought 'changed history'
By Roland Pease BBC science unit, San Francisco
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That one's a little early...brb...
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"A million years ago, this was the site of an enormous catastrophe," explains Christian Koeberl, a geologist from Vienna University, Austria.
"We had a lush rainforest, filled with animals minding their own business, when a kilometre-sized rock came hurtling down from space, at enormous velocity, and crashed into the ground here.
"Within a few seconds, it opened up a gigantic hole in the ground which later filled with water and became the lake we see today," he told the BBC World Service's Discovery programme.
"We had a lush rainforest, filled with animals minding their own business, when a kilometre-sized rock came hurtling down from space, at enormous velocity, and crashed into the ground here.
"Within a few seconds, it opened up a gigantic hole in the ground which later filled with water and became the lake we see today," he told the BBC World Service's Discovery programme.
Drilling for Africa's climate history
By Roland Pease BBC science
Oh...they're drilling on the show too!...found a layer of "wind blown sand"...
here's wiki link on the Bosumtwi craterlake....brb...
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The researchers traveled by increasingly smaller planes, Ski-doos and finally sleds dragged on foot to arrive at the Pingualuit Crater, located in the Parc National des Pingualuit in northern Quebec. The crater formed about 1.4 million years ago as the result of a meteorite impact, and today it hosts a lake about 267 meters deep. Its unique setting – the lake has no surface connection to other surrounding water bodies – makes it a prime candidate for the study of lake sediments.
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well...they come to the conclusion that it was a drought that troubled old Egypt...evidence of wind blown sand out in the Atlantic...dolomite...brb..
"The Sahara desert is almost as large as the United States"...I just read that!...
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Megaliths found at Nabta Playa are overt examples of probably the world's first known Archaeoastronomy devices, predating Stonehenge by some 1000 years.[31] This complexity, as observed at Nabta Playa, and as expressed by different levels of authority within the society there, likely formed the basis for the structure of both the Neolithic society at Nabta and the Old Kingdom of EgyptMegaliths found at Nabta Playa are overt examples of probably the world's first known Archaeoastronomy devices, predating Stonehenge by some 1000 years.[31] This complexity, as observed at Nabta Playa, and as expressed by different levels of authority within the society there, likely formed the basis for the structure of both the Neolithic society at Nabta and the Old Kingdom of Egypt
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a shift in global climate...
This page is good too!...Nabta Playa...
I'm sleepy...time to curl up...
DavidDavid
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