We pretty much assume that during the Stone Age, everyone lived in a cave. At least that would be my assumption. So, a little factoid that I read today is that more people live in caves in China now, than lived in caves all over the world during the Stone Age! Really? It’s true and there’s nothing really surprising when you realize that the population during the Stone Age was around 5 million. In China today it’s way over that and at least 30 million people in China alone still live in caves!

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