Aztec skull whistles produce a sound which elicits a fundamentally different response in our brains to other natural sounds. Source: Jennysnest / CC BY-SA 4.0; inset Frühholz, S., Rodriguez, P., Bonard, M. et al. Psychoacoustic and Archeoacoustic nature of ancient Aztec skull whistles. Commun Psychol 2, 108 (2024). https://doi.org/10.1038/s44271-024-00157-7.

A Hiss, and a Scream: The Reason Aztec Skull Whistles are so Scary

Musical instruments are near universal across all cultures, ancient and modern, but the music they make is not always pleasant. Aztec skull whistles, extremely versatile instruments from 500 years ago, are certainly not. Such whistles were used for more than 250 years from around 1250 AD by the Aztecs of Central America, producing a combination

Monument to Genghis Khan in Ulaanbaator, but the true resting place of the great warlord remains a mystery (Berbard Gagnon / Public Domain)

Where is the Tomb of Genghis Khan?

Genghis Khan was one of the most powerful men to ever live. Born to rule in the middle of the 12th century, he would rise to unite the warring tribes of the Mongolian steppe and become the first khan of his Mongol Empire. Sweeping across Asia and eastern Europe with awesome destruction, in officially adopted

Raganrok is the fatalistic tale at the heart of Norse mythology. What happens to the gods of the Norse pantheon and the world in which they live?

Ragnarok: What Can We Learn from the Doom of the Gods?

In the 13th century in Iceland a poet and a scholar named Snorri Sturluson wrote two great masterpieces, texts which cast a shadow to this day. In his Poetic Edda and his Prose Edda his beautiful writing captured much of ancient Norse tradition: their people, their history, and their gods. These texts are a vital

Jack Ketch became famous not for his skill as a headsman, but for his brutal lack of it (Georges-Antoine Rochegrosse / Public Domain)

Interested in the Killing: Jack Ketch’s Infamous Trade

There is a reason that, in the public image of the medieval executioner they are almost always envisaged wearing a hooded mask. Execution was a bloody trade, and for many it came with an amount of social ostracising: better to remain anonymous then be known as a butcher. In point of fact this was not