In the late 3rd century, the African kingdom of Aksum began striking its own gold coins, something only a handful of powers on earth could do. Why a coin is really a promise.
In 2012 a Timbuktu librarian and his volunteers smuggled hundreds of thousands of manuscripts past armed occupiers. What the rescue teaches us about knowledge today.
In 1976 Haya elders in Tanzania rebuilt a furnace that made carbon steel, a technology 1,500 to 2,000 years old. Why does Africa still ship out the ore?
A 5-tonne elephant stays tied to a tiny stake because it learned that trying was pointless. What that parable says about the habits our classrooms taught us.