Did Neanderthals Have Sex with Modern Humans?

We are currently the only human species alive, but as recently as 24,000 years ago another one walked the earth — the Neanderthals. These extinct humans were the closest relatives we had, and tantalizing new hints from researchers suggest that we might have been intimately close indeed. The mystery of whether Neanderthals and us had sex might be solved if the entire Neanderthal genome is reported soon as expected. The matter of why they died and we succeeded, however, remains an open question.

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