Humans have figured it out many times in history how to live sustainably but keep forgetting. When the Europeans came to the Americas, they found people living

Humans have figured it out many times in history how to live sustainably but keep forgetting. When the Europeans came to the Americas, they found people living sustainably. They thought these people were primitive and have never experienced civilization. Well, it turns out they were the people that remained after civilization collapse and have adapted to live sustainably so they wouldn't repeat what the Europeans created. North and South America had, at some time, cities far larger than any in Europe before those civilizations collapsed. For example, the mound builders along the Mississippi. What's different today is we have now a GLOBAL civilization thanks to globalization. With many of the same features across people's and economies. Humans have never dealt with global risk like we do today.