There are many radioactive rays that leave no trace, ie neutrinos pass completely through the earth as if it weren't there. Please don't misinterpret the facts and put more people at risk just for a joke. Unless we are willing to not only stop population growth but cut it, we are going to have to come up with ever better methods of feeding our population. Luddites can live in a cave, just don't bother the rest of us. Contaminated food kills.
Ignorance can add to the killing.