mixed marriage

'Mixed-race girl' appears in Russia belongs to unknown ghost species
More surprisingly, the ghosts of the mysterious 50,000-year-old girl have not disappeared. They still exist lurking in our own blood.
Another human being became extinct because of the 'marriage of death' with our ancestors
US scientists have discovered an unexpected event that could have caused the ancient Neanderthals to become extinct, leaving the Earth with only one species of his genus - us.