Deep within Mexico’s archaeological treasures lies a haunting instrument whose true psychological impact is only now being ...

Aztec death whistles don't fit into any existing Western classification for wind instruments; they seem to be a unique kind of "air spring" whistle, based on CT scans of some of the artifacts.

Now, a study has found that this instrument is just as terrifying for people today as it was 500 years ago. Scientists from the University of Zurich played the sound of the Aztec Death Whistle to ...