Uranium is present in coal in high enough quantities that a coal plant releases more uranium to the environment then an equivalent nuke plant burns in its reactor, and mining for materials for solar panels creates literal mountains of thorium salts and other thorium contaminated debris.

Nuclear plants have the unfortunate position that they actually have to manage their nuclear waste due to its concentration. It’s not actually hard to store the waste permanently from a technical perspective, it’s just difficult to have the political will to actually do it.