Scientists are now turning a powerful non destructive imaging method toward El Castillo, the iconic pyramid at the heart of Chichén Itzá. What they hope to confirm first is already intriguing, but ...

Add Yahoo as a preferred source to see more of our stories on Google. The Temple of the Inscriptions at the ruins of the Maya city of Palenque, in Chiapas, Mexico. Photograph by Jon G. Fuller, ...