civilization

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Humanity's Legacy Might be the Tunnels and Holes We've Dug

An easy-to-forget feature of human ingenuity may be the final vestige of our time in the universe.

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High on History: That Time When People Overpopulated Themselves into Oblivion

Researchers have puzzled out a mystery for the sudden disappearance of a Puebloan civilization: too many babies.

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