What Are the Headphones?

Is an out-of-the-way ruin in South Africa the oldest human structure on the planet? Or did something other than humans build it? These are the rumors surrounding a place sometimes called Adam's Calendar -- but how do the rumors compare to the facts? Join Ben and Matt as they dive into the story of strange historical ruins.

They don't want you to read our book.: https://static.macmillan.com/static/fib/stuff-you-should-read/

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