Anthropologists have long known that modern man and the brawny, heavier-browed creatures known as Neanderthals coexisted on the planet for tens of thousands of years. What they don't know is how the two species got along. Did they interbreed, as some scientists contend, producing among their descendants the people who now populate Europe? Or did they compete for food and shelter, with Neanderthals eventually losing the struggle and disappearing for good 30,000 years ago?
A landmark report in last week's issue of the journal Cell suggests that whatever else Homo sapiens and Neanderthals did, they probably did not make love. In...
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