The Nabataeans built a city of 20,000 in a desert getting 150mm of rain. How their water system worked, and why it failed.

A German mathematician swept the desert with a broom for most of her adult life to preserve them. What the geoglyphs are, and why flight was never needed to make them.

A third-century writer ranked Aksum beside Rome, Persia and China. The story of the Red Sea empire that minted its own gold.

It was never destroyed in one fire. How the ancient world’s greatest library actually declined, and what genuinely disappeared with it.