The Mystery of Matter
See how Priestley’s friendship with Benjamin Franklin led to his own career in science.
Meet Marie Anne, Antoine Lavoisier’s young wife and most important collaborator.
In this bonus clip, hear about a Swedish apothecary's role in the discovery of oxygen.
Discover why radium was the one element whose properties Dmitri Mendeleev never accepted.
Explore how a young Berkeley chemistry instructor created the element that ended WWII.
Find out how Harry Moseley’s death in World War I changed the role of scientists in war.
Learn about Humphry Davy's discovery of laughing gas and its painkilling effects.
View how radium’s ability to glow in the dark inspired a wave of dubious products.