In the vast sweep of history, even an empire can be forgotten. In this wide-ranging talk, Gus Casely-Hayford shares origin stories of Africa that are too often unwritten, lost, unshared. Travel to Great Zimbabwe, the ancient city whose mysterious origins and advanced architecture continue to confound archeologists. Or to the age of Mansa Musa, the ruler of the Mali Empire whose vast wealth built the legendary libraries of Timbuktu. And consider which other history lessons we might unwittingly overlook.