Most of the armed conflicts in eastern China over the past 1,000 years were triggered by food shortages caused by climate

future climate change, resulting in water and food shortages, might have similar effects

Regions with rich resources and those lacking resources could be hot spots for conflicts

Between 1000 and 1911, there were 899 wars in eastern China, where most of the country's food is grown

Over the same period, climate data for the Northern Hemisphere show six major cycles of warm and cold phases

Crop and livestock production dropped significantly during the cold phases

All four decades of very high conflict, and most periods of high conflict, coincided with cold phases

Warfare generally lagged 10-30 years behind the start of a cold phase

In situations of ecological stress, warfare could become the ultimate means of redistributing shrinking resources

All high war periods and dynastic changes occurred during cold periods

I felt that human beings were still animals