That's what they attempt to do. But we only have ice cores that go back so far. No one knows if that is actually a real historical record either. Ice ages and warming periods can wipe the record effectively and it also assumes that the c14 levels at the poles accurately reflect the c14 levels at all localities at all times.
That's what they attempt to do. But we only have ice cores that go back so far. No one knows if that is actually a real historical record either. Ice ages and warming periods can wipe the record effectively and it also assumes that the c14 levels at the poles accurately reflect the c14 levels at all localities at all times.
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