NOTE: This episode contains multiple high-pitched noises (human and other animals) that some listeners might find startling or distressing.In this episode, host Regina G. Barber and NPR correspondent Nate Rott dive into the science behind the sound of fear. Along the way, they find out what marmot shrieks, baby cries and horror movie soundtracks have in common — and what all of this tells us about ourselves.If you like this episode, check out our episode on fear and horror movies.Curious about other science powering the human experience? Email us at shortwave@npr.org and we might cover your topic on a future episode!Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy