Okay kiddo, let me try to explain nuclear semiotics to you in a way you can understand.
Have you ever made a special secret code or language with your friends that only you all understand? Well, that's kind of what nuclear semiotics is, but on a much bigger and more important scale.
Nuclear semiotics is the study of how to communicate with future generations about dangerous nuclear waste. You see, nuclear waste is really dangerous and can harm people and the environment for thousands of years, even after the power plant is shut down.
So, scientists and experts need to come up with ways to warn people in the future about this dangerous waste, even if they don't speak the same language or have the same technology as we do now. This is called "long-term safety messaging."
One way scientists have tried to do this is by coming up with symbols and messages that could be easily understood by people in the future, even if they have never seen a nuclear plant or heard of radioactive waste. They've also thought about using pictograms or even burying warning signs deep in the Earth that would still be intact thousands of years from now.
It's a really important field of study to make sure that people and the environment are safe from nuclear waste for a very, very long time. And who knows, maybe one day you'll even come up with a cool symbol that could help people stay safe for thousands of years to come!