You refer to nuclear war? It would be awful, without a doubt, especially at a full scale, but even a full scale nuke exchange would not come close to rendering

You refer to nuclear war? It would be awful, without a doubt, especially at a full scale, but even a full scale nuke exchange would not come close to rendering the world uninhabitable. Many of the 50's scenarios on nuclear winter were exaggerated. (a good thing overall if it helped prevent people from pushing certain buttons or turning certain keys)