Page 9 and Page 8 of Códice Maya de México (c. 1100) (all images courtesy Biblioteca Nacional de Antropología e Historia, Secretaría de Cultura-INAH-México; all ...

A new study shows the ancient Dresden Codex held calculations could forecast eclipses centuries ahead. Maya daykeepers used overlapping 223- or 358-month cycles to maintain precise lunar and solar ...

An ancient Mayan document long thought to be a forgery was recently found to be genuine. The text, known as the Grolier Codex, was analyzed by researchers from Yale, Brown, and the University of ...

Detail of eye on page 6 of the Grolier Codex (photo by Michael Coe, all courtesy Brown University) In the 1960s, looters searching a cave in Chiapas, Mexico, came across a rare, ancient codex rich ...

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An accidental discovery in Guatemala has revealed ancient Mayan calculations etched onto the walls of a buried room. These ...

The authenticity of the Grolier Codex has been disputed for the last four decades. A group of researchers who revisited the rare Maya text now argue that there's no way it could be a forgery. If the ...

The Grolier Codex helped ancient Mayans track astronomical phenomena. As the Mayan civilization was in decline, a diligent scribe was working on the oldest book created in the Americas: the Grolier ...

MEXICO CITY — Fifty-four years after it was sold by looters, an ancient Maya pictographic text was judged authentic by scholars Thursday. Limited time: Save 25% on NBC News subscription Get exclusive ...

The Grolier Codex, an ancient document that is among the rarest books in the world, has been regarded with skepticism since it was reportedly unearthed by looters from a cave in Chiapas, Mexico, in ...

An ancient Maya document, long dismissed as a fake, is not only the real thing, but it’s the oldest-known book in the Americas. Researchers believe the Grolier codex dates back to the early 13th ...