Blue Sky Limousine

There was an episode of “Seven Days” (time travel show from 1998-2001, I think) in which a neutron bomb was tested and produced a chain reaction that carried the organic devastation over the entire world. So ever living creature on the face of the planet was killed. Luckily, our heroes were underground at the time…

What I’m wondering is if there’s some kind of chain reaction that would spread worldwide, moving through matter, and eliminating radioactive properties. If this could be achieved, someone could disarm all nuclear weapons, right? Without radioactive material, a nuke can’t explode… I think…