Soft, breathy tones emerge as a tiny human whine begins, producing a light and whimsical whistle that hovers between a playful chirp and an airy lullaby. The sound radiates warmth and curiosity, its ...

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 ...

Archaeologists have discovered numerous ceramic or clay whistles at Aztec sites, dubbed “death whistles” because of their distinctive skull shapes. A new paper published in the journal Communications ...