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A pioneering experiment shows how ancient Egyptians built the giant obelisks of Thebes. New findings suggest how they prompted the downfall of the pharaohs.
The Inca capital of Cusco was supposedly the site of untold gold and riches. New discoveries reveal the secrets behind this mighty empire's fall.
In Mexico, archaeologists uncover a 100-foot tall mud pyramid, marking the site of the capital city of the mysterious Olmec. Who were these people?