
An exciting three-part series about one of the great adventures in the history of science: the long and continuing quest to understand what the world is made of. Three hour-long episodes tell the story of seven of history’s most important scientists as they seek to identify, understand and organize the basic building blocks of matter.

S1 E3 • 8/19/2015
Caught up in the race to discover the atom’s internal parts — and learn how they fit together — a young British physicist, Harry Moseley, uses newly discovered X-rays to put the Periodic Table in a whole new light. And a young American chemist named Glenn Seaborg creates a new element — plutonium — that changes the world forever, unleashing a force of unimaginable destructive power: the atomic bomb.
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