Drugs and explosive chemicals are difficult to detect, but a device more sensitive than a dog’s nose can pick up their traces in seconds
Več na: https://www.newscientist.com/article/2487026-us-government-tests-new-vapour-sniffing-drug-detector-at-the-border/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
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