During ritual ceremonies, the ancient Aztec civilization used a “death whistle” — a haunting instrument shaped like a human skull. Its eerie, high-pitched scream is not just a product of its unique ...

The wail of the Aztec Death Whistle was the last thing many human sacrifices ever heard before they met their untimely end. The chilling noise is described as the 'scariest sound in the world', and is ...

For many people around the world, the very first moments of the new year will be filled with the sounds and colorful light shows of fireworks. From loud bangs to long whistles, bright reds to pale ...