Science Listen to the bone-chilling screams that gave Tasmanian devils their demonic name Ellsworth Toohey
animals Researchers in Perth, Australia believe these are the first recorded echidna vocalizations. Spoiler alert: they sound like a cross between a pigeon cooing and a tiny horse neighing Jennifer Sandlin
unsolved mysteries American Airlines' in-flight announcements include mysterious "grunting, moaning, and groaning" Mark Frauenfelder