The Wondrous Legacy of the Ciliary Hair

Analogous

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FOR NEARLY THREE billion years, life on Earth was mute. Nothing sang, buzzed, or croaked. Ocean animals swished through the water, but their noises were incidental, reached no one, and served no communicative purpose. The only sounds — wind, rain, thunder — merely emphasized the vast emptiness.

If not for the miracle of cilia sprouting from our cell walls, life on Earth might have remained this way….

 
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