September 14, 2016
(Nature) – Likewise, the citizens of dozens of European cities have no idea that their sewage is being sifted through right now, officially to protect them; or that the police are studying the results to track crime. The toilet bowl and its contents, once extremely private, are becoming very public indeed. It’s called wastewater-based epidemiology. Improved sensing techniques and analysis have made the contents of sewers and waste pipes a powerful source of data.
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