This offers another way for humans to keep track of who, exactly, their fellow humans are—and what they are up to
“Every organism,” of course, includes humans. In a paper published on May 15th insurveys pick up large quantities of humanThe researchers did not set out to study “inadvertent human genetic bycatch”, as they call the phenomenon. The work began at the Whitney Sea Turtle Hospital in Florida, during an investigation into a viral turtle disease.
All this raises uncomfortable questions. The most immediate probably apply to scientists themselves. Most countries have far stricter rules governing the collection of humanin turtles—or any other organism—necessarily involves gathering human genetic information too, ecologists will have to be more careful with their data.
In the longer run, the researchers speculate about all sorts of uses. Police might trawl room air to help establish a crime suspect’s movements. Prompted by covid-19, many countries are beginning to use genetic surveillance of waste-water to track viruses. Crunching the humantoo, especially at the level of individual streets, might have health benefits, such as quickly spotting cancer-causing mutations in people’s genomes.
For now, all that may seem fanciful. But the cost of genome sequencing has fallen a hundred-thousand-fold since the turn of the century. Opportunistically analysing the humanthat suffuses the environment is only going to get cheaper and easier. As the ecologists can attest, it offers another way for humans to keep track of who, exactly, their fellow humans are—and what they are up to.
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