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The Horse, the Wheel, and Language by David W. Anthony

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APPENDIX

Author’s Note on Radiocarbon Dates

All dates in this book are given as BCE (Before the Common Era) and CE (Common Era), the international equivalent of BC and AD.

All BCE dates in this book are based on calibrated radiocarbon dates. Radiocarbon dates measure the time that has passed since an organic substance (commonly wood or bone) died, by counting the amount of 14C that remains in it. Early radiocarbon scientists thought that the concentration of 14C in the atmosphere, and therefore in all living things, was a constant, and they also knew that the decay rate was a constant; these two factors established the basis for determining how long the 14C in a dead organic substance had been decaying. But later investigations showed that the ...

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