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Thread: Rise and fall of civilizations due to climate change.

  1. #26
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    Quote Originally Posted by cattel View Post



    "The Younger Dryas stadial, also referred to as the Big Freeze, was a 1,300 (± 70) year period of cold climatic conditions and drought which occurred between approximately 12,800 and 11,500 years BP (between 10,800 and 9500 BC)."
    Source: https://en.wikipedia.org/wiki/Younger_Dryas

    Agriculture took off just after younger Dryas ended, when warm and moist period started.
    Be wary of people who tend to glorify the past, underestimate the present, and demonize the future.

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    Rise of Genghis Khan Linked to Unusual Rains in Mongolia

    A new study of centuries-old tree core samples indicates an abrupt turn of the weather around the first decade of the 13th century. According to the findings of a team of scientists, published recently in the Proceedings of the National Academy of Sciences, the region appears to have entered into a period of uncharacteristically strong rainfall around the year 1211, ushering in a decadelong period of heavy rain the likes of which Mongolia has not seen since.
    The vast surplus of livestock and crops brought on by such advantageous conditions may have played a critical role in supporting the Great Khan's centralized authority and military ventures, at least in the early years of global conquest, the researchers believe.
    "This is a new kind of thought," said Nicola Di Cosmo, a historian at the Institute for Advanced Study in New Jersey and co-author of the report. "If we can prove that you need a certain amount of productivity of land to support an expanded political establishment, we can start to explain why it lasted so long."

    Agriculture, all but impossible in Mongolia in times of drought, could have resurfaced, as well, he said, lending stability to an economy previously dependent on livestock alone.
    And an abundance of grass would likely have meant more horses. Horses were key to the Mongols' military tactics, so much so that each warrior was expected to have five mounts of his own.
    "Energy flows from the bottom of an ecosystem, up the ladder of human society," said Pederson. "Even today, many people in Mongolia live just like their ancestors did."
    The researchers aren't arguing that climate necessitated the Mongols' rise, of course. "Climate may have played a role, but it certainly wasn't the only thing shaping events," said Hessl. "Still, it's very interesting that our climate record appears to fit so well with the historical narrative."





    http://www.scientificamerican.com/ar...s-in-mongolia/

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    Viking glorious days fall strictly into Medieval Warm Period.

    http://www2.sunysuffolk.edu/mandias/...uring_mwp.html
    file:///C:/Users/Pawel/Downloads/vikings_tguide.pdf

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