The Most Powerful Colour in History Smelled of Garlic

The most coveted colour in the ancient world came from a sea snail that smelled of garlic and cost more than gold. Tyrian purple built empires, wrote laws, and ended careers and when Constantinople fell in 1453, the knowledge of how to make it disappeared almost entirely. In this episode we trace the colour from the Phoenician city of Tyre to the courts of Rome and Byzantium, through the chemistry that made it impossible to fake, and the laws that made wearing the wrong shade a capit...