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Fall of Roman Empire Linked To Climate Change

January 21, 2011
Just clipping them as I find them.
clipped from www.newscientist.com
Centuries of unpredictable climate may have been partly to blame for the fall of the western Roman Empire.
record of 2500 years of European climate has uncovered several links between changing climate and the rise and fall of civilisations.

Outlook is bleak (Image: Carlos Gotay/Getty)
Climate fluctuation was a contributing factor alongside political failures and barbarian invasions, says Ulf Büntgen of the Swiss Federal Institute for Forest, Snow and Landscape Research in Birmensdorf, Switzerland
Büntgen used tree rings to build up a history of European climate.
9000 samples from oak, pine and larch
reconstruct how temperatures and rainfall in western Europe changed over
2500 years.
AD 250 to 550, the climate flipped, from one decade to the next, between dry and cool, and warm and wet
The climatic turmoil coincided with political upheaval and waves of human migrations. By AD 500, the western Roman Empire had fallen.
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