In this episode of Crash Course History of Science, we travel to the Americas to ask the question, "When are we?" and get some answers. We'll look at the Maya, Inca, and Olmec civilizations and how they recorded their science.

Ever wonder where chocolate comes from? Take a tasty journey through time to discover the history of chocolate! It all began thousands of years ago with the ancient Maya and Aztec people, who made a special drink from cacao beans. Later,...