ScienceIn Humboldt's Footsteps: Slavery, the Greatest of All Evils 10:22This browser does not support the video element.ScienceChristian Roman07/12/2019July 12, 2019On his travels in the Spanish colonies of Latin America, Humboldt witnessed the brutal treatment of indigenous and African laborers. The legacy of slavery still persists, even in the village of Palenque, the first free town in South America.Copy linkAdvertisement