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When the Earth Started to Sing – David G. Haskell

Emergence Magazine Podcast

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Early Animals Communicated by Sound

As far as we know, single-celled beings do not communicate by sound. It would take about another 200 million years for animals to call or sing. Paleontologists may yet discover fossils of ancient soundmakers. But the keen ears of listening predators may have muzzled life's sonic evolution.

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