IN THE SUMMER Of 2013, Researchers At The Technical University Of Denmark Headed To The Copenhagen Airport For A Special Delivery: Poop. The Crew Who Clean Out Airplane Toilets Had Siphoned It From Flights Arriving From Around The World Just For Them.
Back In The Lab, The Researchers Turned The Samples Into DNA Soup And Fed Them Through A Sequencing Machine. Out The Other End Came Antimicrobial Resistance Genes And Potential Pathogens—All Traceable To The Individual Plane’s Country Of Origin.

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