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Let’s do a rough calculation to show how this works.

Students not only want to know how old a fossil is, but they want to know how that age was determined.

But for some people, the discovery raised a different question.

How do scientists know the bones are really 68 million years old?

Buffon's Iron Sphere Experiments- On the basis of iron sphere cooling experiments, Frenchman Georges de Buffon estimated that the Earth would have needed 75,000 years to cool to its present temperature.

The quantitative approach is admirable, but Buffon's assumptions are flawed. Silicate minerals have lower heat conductivity than steels and are better insulators leading to slower cooling rates.

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