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Scientists show you can collect DNA from the air

It could help understand airborne diseases and solve crimes.

[engadget.com]

FearlessFly 9 Apr 6
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This suggests that the amount of contact necessary to leave DNA is much more casual than criminal forensics assumes. Further testing is required. Can you leave your DNA in a room by passing by an open window? Could you leave your DNA on someone else just by standing near them? Enough that they might then deposit it somewhere you have never been?

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