The spectrum of history

I have previously blogged about carbon dating, a method which can be used to date organic items up to about 50,000 years old. Tests of carbon-dating have used tree-ring data back to around 10,000 BC.

The timeline above shows some highlights of the past 30,000 years, including one of the oldest cities, the oldest living tree, the oldest pyramid, and a Babylonian clay tablet I blogged about two years ago. The two caves in France are definitely on my “bucket list.”

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