Past climate change: A warning for the future?

Source: Science Daily

A new study of climate changes and their effects on past societies offers a sobering glimpse of social upheavals that might happen in the future. The prehistoric groups studied lived in the Amazon Basin of South America hundreds of years ago, before European contact, but the disruptions that occurred may carry lessons for our time.

https://www.sciencedaily.com/releases/2019/06/190617164652.htm