Ranging from a threatening hiss to a blood-curdling scream, the sound of the Aztec death whistle is as creepy as the skull-like appearance of the instrument that produces it. Brain scans suggest the ...

Its fear-splitting screech reverberates throughout space and time. Swiss and Norwegian neuroscientists have discovered that the ancient Aztec death whistle — often credited with emitting the scariest ...

The blood-curdling scream of the Aztec Death Whistle is thought to have been a soundtrack to human sacrifices centuries ago, or may even have echoed through the landscape as the ancient empire took ...