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 ...

ZÜRICH, Switzerland — Imagine an object so terrifying that its mere sound could make your blood run cold — a sonic weapon designed to disrupt the brain and induce pure dread. This isn’t the plot of ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The Aztec death whistle is a mesoamerican instrument designed to imitate a human ...