Most Ivory for Sale Comes From Recently Killed Elephants, Suggesting Poaching Is Taking Its Toll - Carbon dating finds that almost all trafficked ivory comes from animals killed less than three years before their tusks hit the market.

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Most Ivory for Sale Comes From Recently Killed Elephants, Suggesting Poaching Is Taking Its Toll - Carbon dating finds that almost all trafficked ivory comes from animals killed less than three years before their tusks hit the market.