The solution in many countries basically amounts to letting future generations deal with the problem. A lot of nuclear waste is being stored in temporary places

The solution in many countries basically amounts to letting future generations deal with the problem. A lot of nuclear waste is being stored in temporary places awaiting a permanent solution that does not yet exist. That solution is going to be expensive and nobody is particularly eager to have that in their back yard even though the risks are very low. So, lots of countries have been deferring solving that problem and only talk in terms of hypothetical solutions that could work that somebody else (i.e. future generations) might want to pay for. Only a few countries (e.g. Finland) have permanent storage underground for nuclear waste. But that was only opened fairly recently. France actually used to just dump it in the ocean. These days they are a bit more responsible. I think they are building a storage facility that is supposed to open some time next decade. Meanwhile, just like in most other places, they just store the waste in sealed containers and store those on site. I would say it's a solvable problem but not a solved problem. The solution has a large price tag with absolutely no return on investment. And that's a problem that doesn't have any solution.