For archaeologists, silver-bullet theories of civilisational collapse grow less convincing the closer they are scrutinised http://ow.ly/yNT630gC6T9 pic.twitter.com/URPsyjI0cH
7:00 AM - 16 Nov 2017
0 replies
6 retweets
6 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.