The Rubber Recipe Goodyear Missed by 3,000 Years.

3,600 years ago, people in the rainforests of Mexico's Gulf Coast made rubber balls that bounced higher than anything Europe had ever seen. They had no laboratory, no metal tools and no written recipe. So how did they do it? The answer is not luck. The Olmec mixed tree latex with the juice of a moonflower vine, and by changing the proportions they made three different kinds of rubber: one for bouncing balls, one for tough sandal soles, and one for glue. Europe would not solve the same problem until Charles Goodyear, in 1839. In this episode: the oldest rubber balls ever found at El Manatí, the MIT experiments that reverse-engineered the recipe, why "natural rubber" is the wrong phrase, and what is still unproven. SOURCES Hosler, D., Burkett, S. L., Tarkanian, M. J. (1999). Prehistoric Polymers: Rubber Processing in Ancient Mesoamerica. Science. Tarkanian, M. J., Hosler, D. (2011). America's First Polymer Scientists: Rubber Processing, Use and Transport in Mesoamerica. Latin American Antiquity. Ortiz, P., Rodríguez, M. del C. Excavations at El Manatí, Veracruz, Mexico. 2024 study of the El Manatí rubber balls, Archaeological and Anthropological Sciences. #history #archaeology #ancienthistory