The Aztec skull whistle produces a shrill, screaming sound. A study shows that these whistles have a disturbing effect on the human brain. The Aztecs may have deliberately used this effect in ...

More chilling than a werewolf's howl, the human scream sends shivers down the spine. And we're not talking about the one that comes from the mouths of groupies at a ...

With the fast-approaching celebration of Halloween, fearsome frights and horror flicks are as much a staple as jawbreaker-related trips to the dentist. From the ghosts that swing from the trees to the ...

When the Aztecs dominated central Mexico, a blood-curdling sound like a human scream played through a small whistle. Luis Aceves via Unsplash In cultures around the world, instruments have brought ...