Study casts doubt on Neanderthals' use of tools

Researchers use a new carbon-dating technique on artifacts found with Neanderthal remains and discover that the items may not be the same age.Scientists have argued over Neanderthals' intelligence: Were they smart enough to develop complex tools on their own, or did they pick up the habit from modern humans? A new study says that debate may be moot — the tools and trinkets credited to Neanderthals may not be Neanderthal at all.

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