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The age of this remarkable discovery was determined by the use of uranium decay into thorium and helium.

Carbon 14 only works with ... carbon

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In a French cave deep underground, scientists have discovered what appear to be 176,000-year-old man-made structures. That's 150,000 years earlier than any that have been discovered anywhere before. And they could only have been built by Neanderthals, people who were never before considered capable of such a thing.

This is going to force a major shift in the way we see these early hominids. Researchers had thought that Neanderthals were profoundly primitive, and just barely human. This cave in France's Aveyron Valley changes all that: It's suddenly obvious that Neanderthals were not quite so unlike us.

Read more on Big Think:

https://bigthink.com/robby-berman/a-cave-in-france-changes-what-we-thought-we-knew-about-neanderthals

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AAD REPORTS   Reports, news and opinion from Art-Antiques-Design.com