For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

Imagine walking a snowy plain, mammoths looming nearby, and knowing enormous cats once prowled in their shadow. These ancient ...

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Minnesota’s state fossil is the giant beaver, an extinct creature the size of a small bear that roamed around the Twin Cities more than 10,000 years ago. Lawmakers had approved the new state fossil ...