China

Study of sediment finds climate cycles may have caused the rise and fall of Tibetan dynasty




The rise and fall of the Tibetan empire could be closely linked to sun cycles, according to an international study.Unusually weak solar activity around 600AD brought more rain and snow to the Tibetan plateau, found the researchers, with the wetter climate helping create Tubo, the first unified empire in Tibet, in the mid-7th century.By the 9th century, however, ultra-strong solar winds had upended the regional climate, causing famine and social unrest that led to the Tibetan empire’s epic…



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