Karen Hopkin: This is Scientific American’s Science, Quickly. I’m Karen Hopkin. What’s the scariest sound you can think of? Is it…? [CLIP: Scary breathing and screaming] Hopkin: Or maybe…? [CLIP: Terrifying music] Hopkin: How about…? [CLIP: Lion roar] Hopkin: Well, if you’re a mammal in the African savanna, it may well be this: [CLIP: Audio […]