You're shedding your DNA everywhere you go

The Science Briefing

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Ancestry.com, hair samples and crime scenes - that's likely what you think of when you hear DNA.

Probably not fish mucus and kangaroo scat.

That's what's called environmental DNA - or eDNA - and ecologists can track it down pretty easily to find out what animals and organisms have been where.

But some are concerned about human eDNA could be collected and used in nefarious.

Dr Sophie Calabretto talks to Cosmos Magazine journalist Ellen Phiddian about the good and the bad uses of environmental DNA.

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