Swiss and Norwegian neuroscientists have discovered that the ancient Aztec death whistle — often credited with emitting the scariest sound on earth — still terrifies people today due to a ...

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 scream, and was often used during battle or at ...

Ritual Aztec whistles produced a brain-scrambling "scream," according to a new study. The objects were used during human sacrifices and may have prepared victims for their supposed descent to ...