An Empire Built On Excrement

A new study credits llama poop with paving the way for the Incan Empire. According to researcher Alex Chepstow-Lusty, "The widespread shift to agriculture and societal development was only possible with this extra ingredient ? organic fertilisers on a vast...

Source: http://feedproxy.google.com/~r/andrewsullivan/rApM/~3/9A---Wfk0M8/the-power-of-poop.html

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