@CNN: Ancient DNA and a new technique have been used to determine the likely cause of a mystery epidemic in the 16th century that may have killed millions https://t.co/ozS2DpvKlJ https://t.co/i0PwwdER98

@CNN: Ancient DNA and a new technique have been used to determine the likely cause of a mystery epidemic in the 16th century that may have killed millions https://t.co/ozS2DpvKlJ https://t.co/i0PwwdER98