National Geographic Doomsday 2210 (2012)
It happened to the Romans, the Anasazi, and the Mayans and, inevitably, one day our own modern civilisation will also fall. In this two hour special discover how a future civilisation might be baffled as to why the population of these once-great cities would suddenly abandon their technology and architecture, and turn their homes into ghost towns. Some experts believe that there is a very real risk this could happen, and the collapse of the world as we know it is closer than we think.
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