The Aztec skull whistle produces a shrill, screaming sound. A study shows that these whistles have a disturbing effect on the human brain. The Aztecs may have deliberately used this effect in ...
What Psychedelic Foods Did Aztecs Eat at a Banquet?' In this video, Dan Snow tries the various foods that were common within an Aztec banquet and delves into the civilisation's psychedelic history.
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