CASSAVA — The Root That Can Kill You If You Cook It Wrong

There's a root that feeds 800 million people on Earth — and it can also kill you if you rush it. Cassava has been sustaining civilizations for ten thousand years, but prepared even slightly wrong, it releases a compound that shuts down the human nervous system for good. This episode traces its story from the Amazon basin where it was first domesticated, through its dark entanglement in the transatlantic slave trade, to a rural clinic in 1980s Mozambique where a young Swedish doctor named Hans Rosling turned a mysterious paralysis outbreak into one of the defining detective stories in modern epidemiology. This video was researched and produced with the assistance of Artificial Intelligence, for educational and entertainment purposes. All historical claims are based on documented sources. If you love uncovering the hidden science and forgotten stories behind the food you eat without a second thought, hit subscribe — new investigations drop every week. And let us know in the comments: which everyday ingredient do you want investigated next?