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Scientists Use DNA of Dust to Trace Where an Object’s Been

Clothing, medicine and other items in one’s environment all have genetic markers, or fingerprints, that provide clues to where they came from, according to scientists. Researchers are analyzing the microorganisms in dust particles that land on surfaces and are using artificial intelligence to read and classify the unique genetic codes of the microbes that vary from place to place. “It is the collection of bacteria, fungi, viruses, protozoa that are present in any environment,” said...

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