If you think about it, burying a bunch of random stuff in the ground isn’t the most logical practice. But for centuries, people have created time capsules for future generations to find. Today Will and Mango dig in, literally, to this strange phenomenon. What counts as a time capsule? Are there limits to what can be preserved? What are the most surprising (and disappointing) objects ever hidden away? Plus: The shocking true story of Blinky, the little lizard who could. Or couldn’t, as the case may be.

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Photo of the Crypt of Civilization via Wikimedia Commons.

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