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 skull-shaped body of the Aztec death whistle may represent Mictlantecuhtli, the Aztec Lord of the Underworld. Credit: Sascha Frühholz / UZH The so-called Aztec “death whistle” is an instrument ...

On a crisp November evening, Bucharest sheds its autumn gloom and slips into something far more vivid. Inside the Radisson ...

Add articles to your saved list and come back to them any time. A New Zealand scientist believes he's captured a recording of the mystery hum that has been heard by scores of people living and in and ...

Mosquitoes flap their wings not just to stay aloft but for two other critical purposes: to generate sound and to point that buzz in the direction of a potential mate, researchers at Johns Hopkins ...