Alexander von Humboldt's South American Expedition

From July 1799 to April 1804, Alexander von Humboldt and French botanist Aime Bonpland traveled over 9,600 kilometers across Venezuela, Cuba, Colombia, Peru, Ecuador, and Mexico. They collected more than 60,000 plant specimens and systematically measured temperature, altitude, magnetic variation, and atmospheric composition. Humboldt mapped the Orinoco River system, attempted to summit Chimborazo volcano, and documented the cold ocean current off Peru that now bears his name. The expedition's findings, published across thirty volumes, established interconnected ecology as a field of inquiry.