Technology
Pollen-coated bullet could make its mark on criminals
A unique "nanotag" cartridge coating, designed to stick to clothing and skin, could help CSI teams link a suspect to a particular weapon after gun crime
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A unique "nanotag" cartridge coating, designed to stick to clothing and skin, could help CSI teams link a suspect to a particular weapon after gun crime
The way isotopes in the water you drink leave a record in your hair is being used by police forces to reveal where people have lived