We won't be the first civilization to collapse — but we may well be the last

The next breakdown will likely be global.
 
 The Cahokia Mounds stand by the Mississippi as a warning from a fallen culture. But do we still have time to heed it? Examining this prehistoric nation, Chris Hedges reflects on how history has revealed that civilisations die in familiar patterns, and our current times suggest a similar fate is ahead of us.