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A 4,500-year-old Egyptian pyramid may hide a secret doorway

The Great Pyramid of Giza has been studied for centuries, yet new technology is still revealing features that earlier generations could not see. Now researchers say a 4,500-year-old structure on the ...
All That's Interesting

New Analysis Suggests That The Great Pyramid Of Giza Is Potentially 20,000 Years Older Than Experts Thought

After using the "Relative Erosion Method" to uncover how old the Great Pyramid of Giza is, Alberto Donini suggests it may date to 22916 B.C.E.
CNN

How did ancient Egyptians stack those heavy stones of the oldest pyramid? Scientists float new theory

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. For years ...