900-year-old astronomy guide is oldest known book written in the Americas. In a rare reversal, archaeologists have determined that a Maya book written almost 900 years ago is genuine—after decades of ...

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 ...

We gather much of what we know about Maya astronomical knowledge from detailed records they themselves created on the pages of bark-paper books called codices. In the mid-sixteenth century, Franciscan ...

PROVIDENCE, R.I. [Brown University] --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 ...

Scholars of pre-Columbian history have been trying to decipher something called the Grolier Codex ever since it was discovered by looters in a Chiapas cave back in the '60s. It's a 13th-century ...

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 ...

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 ...