Today, the idea of sacrificing a human being is unheard of. But in some ancient civilizations, it was a regular part of the culture. See more »

The Mayans created a sophisticated set of calendars to help them plant crops, plan religious ceremonies and keep their history. How did they do it? See more »

Some people believe that the world will end in the very near future -- Dec. 21, 2012, to be exact. It's a date that the Mayans predicted long ago would mark a period of great change, but should we be worried? See more »

Aztecs, an Indian people who dominated Mexico at the time of the Spanish conquest in 1521. See more »

Maya Indians, a people living in Mexico, Guatemala, Belize, Honduras, and El Salvador, whose highly developed civilization reached its peak in the seventh and eighth centuries. See more »

Montezuma II, or Moctezuma II (1480 - 1520), the Aztec emperor of Mexico at the time of the Spanish conquest. See more »

Olmec Indians, an ancient Indian people of Mexico. They created the first civilization in North America. See more »

Yaqui Indians, a North American Indian tribe of the Uto-Aztecan language family. At the time of the Spanish conquest of Mexico in the 16th century, they inhabited the region along what is now the Yaqui River in the state of Sonora. See more »

Zapotec Indians, an Indian people that once dominated much of southwestern Mexico. See more »