Archaeologists found hidden messages and graffiti left by medieval pilgrims on the walls of the Cenacle, the sacred site of ...

A researcher discovered hidden messages called hieroglyphic cryptographies on the Luxor Obelisk in France. Some of the hidden messages were propaganda asserting Ramses II’s power. Messages on one side ...

A Hillhouse student’s eyes widened as he applied grape juice and heat to what appeared to be a blank piece of paper — but instead held a secret message in invisible ink, written as part of a course ...

There’s a scientific secret hiding in one of the most famous paintings of all time. It resides on the ceiling of the Sistine Chapel, painted by Michelangelo, as God gives Adam the first spark of life.