Archaeologists have made a groundbreaking discovery inside Egypt's Great Pyramid that they say rewrites longstanding beliefs about how the structure was built 4,500 years ago.

For centuries, the construction of Egypt’s Great Pyramid has been shrouded in mystery, with various theories proposed about how such a colossal structure was built. While many assumed the labor force ...

At the top of a mountain in Greece stands the oldest known human-made structure.

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