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The drying and cooling of the Younger Dryas adversely affected the food supply of hunter-gatherers.
ECONOMIST: Climate change and civilisation
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The first of these, known as the Younger Dryas, after a tundra-loving plant that thrived during it, occurred at the same time as the beginning of agriculture in northern Mesopotamia, in land now controlled by Turkey, Iraq and Syria.
ECONOMIST: Climate change and civilisation
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The episode is known as the Younger Dryas, because in Scandinavia abundant pollen from a tundra flower called the mountain avens, Dryas octopetala, reappears in soil from this date, indicating that the forest had once more given way to tundra.
WSJ: Matt Ridley on New Support for a Global-Cooling Theory | Mind & Matter
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He suffered a key setback in recent years when several groups failed to find the right kinds of spherules or otherwise duplicate the results of his team's work and, worse, when a spherule sample from Younger Dryas rocks proved to be only 135 years old.
WSJ: Matt Ridley on New Support for a Global-Cooling Theory | Mind & Matter