The story of how the elements were discovered and mapped and the pioneers who cracked their secrets. Just 92 elements made up the world, but the belief that there were only four - earth, fire, air and water - persisted until the 19th century. The programme looks at the alchemists who first began to question the notion of the elements in their search for the secret of everlasting life.
The story of chemistry, the story of the building blocks that make up our entire world - the elements