WHAT IF...CIVILISATION COLLAPSES?

摘要

There are 7.4 billion people on the planet - nearly three times as many as there were 60 years ago. The UN estimates that in another 60 years we will be approaching 11 billion. Others say that population will peak soon, then fall gradually as we hit resource limits. There is another possibility: that hitting those limits causes our surprisingly fragile civilisation to collapse, triggering a global die-off.