Archaeologists delved into medieval cesspits to study old gut microbiomes – Ars Technica

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One of the things archaeology consistently teaches us is that humanity is remarkably resilient in the face of crisis. Another is that poop is forever. Archaeologists have already explored the contents of coprolites and the chemicals left behind by a citys worth of human waste. And according to a recent study, DNA from your gut microbes can stick around for centuries under the right conditions.
Archaeogeneticist Susanna Sabin and her colleagues found DNA from huma…

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