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 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 ...

WASHINGTON (Reuters) - Using written symbols such as hearts, arrows and hands, the ancient Aztecs maintained an arithmetic system that was far more complex than previously understood, scientists said ...

Who were the Aztecs and how did they live? What happened to them and what did they leave behind? In this riveting program, viewers travel from present-day Mexico City to over 500 years into the past ...

[Part 1] Aztec -- 1. The historical and geographical background of the Aztecs -- 2. The people -- 3. The Aztec "kings" and the directing classes -- 4. The achievements -- [Part 2] Maya -- 1. This ...

pt. 1. Introduction -- 1. Introduction -- Overview -- The issue of jargon terminology versus "plain English" -- Anthropology : with what kind of animal are we dealing? -- Contributions made by other ...