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Published online 13 July 2007 | Nature | doi:10.1038/news070709-13
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China had more wars in cold weather
Reduced agricultural productivity seems to trigger armed conflict.
Most of the armed conflicts in eastern China over the past 1,000 years were triggered by food shortages caused by climate, say researchers.
The finding lends weight to the idea that future climate change, resulting in water and food shortages, might have similar effects, says Earth scientist David Zhang, of the University of Hong Kong.
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