I guess, our grand children may be worried about that.
I am sure, they will find a fix.
Right now, if I were in charge, I would go there, and map the radiation levels.
Fence off the reactor and the few places where there are demonstratively high levels of radiation and declare all the rest OK!
They have done that! There is an exclusion zone around Chernobyl of 30 kilometres (19 miles).
Chain-linked Fenced in and warning signs in multiple languages all around.
A couple of years back, an international team of scientists were allowed in to do surveys of the area and see what has happened to the wildlife.
They were dumbfounded!
There not only was plentiful wildlife, but it was thriving!
Every kind of wildlife, birds, rabbits, mice, moose, bear, fox and anything else you can imagine. Trees and plant life was fully recovered where the trees had all died.
Everything was radioactive way beyond what is considered to be safe and healthy exposure!
Why, they wondered?
Then it dawned on them:
All these things die of natural age-related things before the radiation has an affect that would kill them. They don’t live long enough for the radiation to become a problem.
Now, humans with a much longer lifespan would have a problem living there, but still might live to be 40-50 years..............