The Giza Plateau contains some of the most controversial ancient structures on Earth, including the Great Pyramid, the Sphinx and massive megalithic temples built with astonishing precision.

This discussion explores theories surrounding ancient underground structures beneath Egypt, the possibility of post-catastrophe refuge cities, and whether sites like Giza may have once served ...

Researchers visit an ancient pyramid in Peru in NOVA's Ancient Builders of the Amazon. Image Credit: Federico Pardo for NOVA/GBH For 50 years, NOVA has taken viewers on adventures through time and ...

Add Yahoo as a preferred source to see more of our stories on Google. One of history's biggest questions is: "How does an entire civilization disappear?" One can comprehend how an object or even a ...

Rising abruptly from the lush, untamed jungles of southeastern Venezuela, Mount Roraima is a geological behemoth that defies ...