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A white-throated round-eared bat (Tonatia silvicola) catches — and munches — a katydid on Barro Colorado Island in Panama. Katydids are "the potato chips of the rain forest," scientists say. Christian Ziegler/ Minden Pictures/Getty Images hide caption

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Christian Ziegler/ Minden Pictures/Getty Images

Sound Matters: Sex And Death In The Rain Forest

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Moraine Park is a grassy valley inside Rocky Mountain National Park. Wes Lindamood/NPR hide caption

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Wes Lindamood/NPR

Beyond Sightseeing: You'll Love The Sound Of America's Best Parks

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Chris Nickels for NPR

How Sound Shaped The Evolution Of Your Brain

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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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Courtesy of Robert Oelman

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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Courtesy of Cornell Lab or Ornithology

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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Green Fire Productions/Flickr

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

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Ornithologists Uncover One Listener's Shy Backyard Tweeter

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NPR intern Poncie Rutsch takes a crack at making a big sound. Meredith Rizzo/NPR hide caption

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Meredith Rizzo/NPR

Why Knuckles Crack

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