[Wormwood]

Don Smith, College of Eastern Utah, San Juan branch: "I think we're becoming more aware that those people were far more familiar with astronomy, science and possibly math than we give them credit for."

Not to mention Population Control and Culinary Arts.

[Fishing-guy]

You might be thinking of the Aztec in Mexico. However, I did once read an interesting theory that the Mayans or some other race from Mexico introduced human sacrifice to the Aztec, during their drought period.