Chris Nickels for NPR

How Sound Shaped The Evolution Of Your Brain

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The view at daybreak in Bosque del Apache, N.M. John Fowler/Flickr hide caption

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What Does Daybreak Sound Like Where You Live?

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Squirrels closely mimic bird warning calls and help spread the alarm through the forest that hawks, owls or other predators are nearby. iStockphoto hide caption

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Squirrels Mimic Bird Alarms To Foil The Enemy

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Male treehoppers make their abdomens thrum like tuning forks to transmit very particular vibrating signals that travel down their legs and along leaf stems to other bugs — male and female. Courtesy of Robert Oelman hide caption

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Good Vibrations Key To Insect Communication

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African forest elephants stampede in the Central African Republic jungle. Courtesy of Cornell Lab or Ornithology hide caption

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To Decode Elephant Conversation, You Must Feel The Jungle Rumble

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Humpback whales and tanker in Stellwagen Bank National Marine Sanctuary in Massachusetts Bay. Green Fire Productions/Flickr hide caption

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Listening To Whale Migration Reveals A Sea Of Noise Pollution, Too

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