The Zohar Chudush (Parshas Biraishis) says that the 7th millennial the world will be in a state of destruction and then it will be rebuilt in the 8th, and see the Zohar (Vayikra 16b) that before the resurrection of the dead the world will be in a state of destruction, and then there will be the prophecy of Isaiah (66) “the new sky and the new earth,” from these places and others similar, I get the sense that there very well might be a huge nuclear catastrophe, however it will only occur after the revelation of the truth, and this itself sounds very much like a radioactive strike, because the Sages revealed that Hashem will remove the covering from the sun, and the tzaddikim will bask in its rays and the evildoers will fry and melt in it (also Zecharia 14 seems to describe those who are blasted with radioactivity L”U)…. Bottom line, there's going to be some pretty crazy stuff going down pretty soon (at most a few hundred years)…. Take advantage of Nanach while you still can.
Maybe Nanach is protection, or the ability to adapt to radioactivity - don't test it though until you hear from the Messiah, may he come soon, amen.
Na Nach Nachma Nachman MeUman!