On the edge of Mexico City's famed Zócalo plaza, next to the ruins of the Aztec sacred pyramid known as the ... today feel justified in dismissing sacrifice as a European fiction.

Sacrifices were government-sanctioned ritual performances staged at the heart of the Moon Pyramid. Teotihuacán ... than 1,000 years before the eminent Aztec civilization settled in.

Archaeologists have discovered the ruins of an 800-year-old Aztec pyramid in the heart of Mexico City that could show the ancient city is at least a century older than previously thought.