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 ...

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 ...

This week's question comes from Karin Macaulay in Victoria, BC. She says "We have listened to a tree frog this past summer and been amazed at the huge voice from this little creature. How do they make ...