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RE: Scientists have a new tool to identified species; by sequencing environmental DNA (eDNA) to find all the species that lives in the environment
It might work, but I think it will provide lots of false-positive results unless the crime has been committed in a place where almost no people go to. But the technology is still very new, so maybe it will evolve to be used for this purpose in the future.
Oh Yea! That's true. You are quite right about the false positives. Thanks @valth, I get your logic now.
Hehe, that's good! It might still be useful for forensics in some form or another, but there's a few problems to be solved first :)