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Lab bids to combat species smuggling

The latest forensic science is being harnessed in a bid to combat the international crime gangs killing and smuggling endangered species.

A new laboratory in the Thai capital Bangkok, equipped to gather DNA from elephant tusk, rhino horn and tiger skin, is on the frontline in an increasingly desperate effort.

As the latest round of talks aimed at halting the trade in endangered species opened in Bangkok, the BBC's science editor David Shukman discovered the scale of the problem authorities face.

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