An astronomical event may have marked the end of one of the most emblematic dynasties of ancient Egypt. A total solar eclipse ...

But you know, the Great Pyramid of Khufu is one hell of a barn. NOVA: Some of the theories of who built the pyramids suggest that the builders may not have been from Egypt. Can you respond to that?

It was divided into seven palms, and each palm was divided into four fingers. The pyramid builders must have measured incredibly accurately. There is only a few centimetres' difference in length ...

Journey back four and a half thousand years to Egypt's Old Kingdom, to the Pyramid Age. As the vizier, or head of state, you are about to undertake the building of the king's pyramid.