The mystery of Maya blue has fascinated researchers since the discovery of artifacts still displaying this hue after ...

Copal is tree resin from a copal tree. Today, it is still used in spiritual practices around the world as a way to connect deeply to spirit.

In a recent study published in the journal Ancient Mesoamerica, Dr. Dean Arnold and his colleagues, Joseph Ball, Laure ...

Copal rocks are usually the size of a clenched fist and their colors vary according to the tree species they came from. Image courtesy of João José Lopes Corrêa.