The world's first nuclear explosion happened on 16 July 1945, when a plutonium implosion device was tested in New Mexico. Now a new film about the so-called father of the atomic bomb, J Robert Oppenheimer, looks at how he came to create a weapon that would change the world and how it changed him. Image: J Robert Oppenheimer on the test ground for the atomic bomb in September 1945 Decades since its invention, as Russia's war rages in Ukraine, the weapon's threat to the world is back in people's minds. Director Christopher Nolan, who also wrote the movie, basing it...