A series of reconstructions and videos showing how the ancient Egyptians used precise calculations and hard manual labour to build the pyramids in this collection of KS2 History videos.

The Great Pyramid is not just stone—it is mathematics carved into reality. Its dimensions appear to encode constants like pi and the golden ratio with precision that should not exist for its time.

Embed <iframe src="https://www.npr.org/player/embed/1832283/1832284" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player ...

New research suggests the answer was hiding inside the structure all along ...