By Will Dunham WASHINGTON (Reuters) - Inside a Siberian cave that has been an archeological treasure trove, an elk's canine tooth - pierced to become .
By Will Dunham WASHINGTON (Reuters) - Inside a Siberian cave that has been an archeological treasure trove, an elk's canine tooth - pierced to become .
By Will Dunham WASHINGTON (Reuters) - Inside a Siberian cave that has been an archeological treasure trove, an elk's canine tooth - pierced to become .
By Will Dunham WASHINGTON (Reuters) - Inside a Siberian cave that has been an archeological treasure trove, an elk's canine tooth - pierced to become .