The climate theory casting new light on the history of Chinese civilisation | South China Morning Post

The climate theory casting new light on the history of Chinese civilisation | South China Morning Post



...Human societies have gone through temperature cycles such as the Medieval Warm Period (900- 1300) and Little Ice Age (1300-1870) Liu said, but most of that data came from Europe, not China.

The study left one big question. “Why do the sun’s activities vary every 500 years? Nobody can explain,” he said.