12 tiny worlds — Unexplainable

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If you went back 500 million years and re-ran evolution, would life be totally different today?

Guests: Richard Lenski and Zachary Blount, evolutionary biologists at Michigan State University

For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/unxtranscripts⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

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