Add Yahoo as a preferred source to see more of our stories on Google. A tattered piece of bark paper with illustrations on it. Centuries-old codices from what is now Mexico hold a wealth of knowledge ...

Nahuatl, the language of the ancient Aztec civilization spoken today by the Nahua people in southern Mexico, has made a surprisingly profound impact on several languages, including English and Spanish ...

The trail from the Seven Caves (before 1299) -- People of the valley (1350s-1450s) -- The city on the lake (1470-1518) -- Strangers to us people here -- A war to end all wars (1520-1521) -- Early days ...