On a summer morning in 1945, a device known simply as 'Gadget' was detonated. An enormous explosion tore a crater into the New Mexico desert, melting sand into radioactive green glass and sending a mushroom cloud 7.5 miles into the sky. This was the first controlled detonation of a nuclear weapon, and its mastermind was the American theoretical physicist, J Robert Oppenheimer.

In this episode, Dan is joined by writer and artist Ben Platts-Mills to hear about the man who orchestrated one of the most extraordinary scientific developments in human history. What kind of person was he? How did he go from a shy, studious child to a charismatic celebrity scientist? And what did he think about the perils of the weapons he worked so hard to create?

Produced by James Hickmann and edited by Dougal Patmore.

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