Christopher Bernhardt, researcher
with the U.S. Geological Survey,
along with other researchers, conducted a study to reveal whether the evolution
of societies is sometimes tied to climate variability at all scales – whether
decadal or millennial.
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. Study results in relation to Egypt's pyramids building era as published in Geology:
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. Study results in relation to Egypt's pyramids building era as published in Geology:

