A key stat that every environmentalist who is serious about solving climate change should know:
The US Navy has put into operation over 400 nuclear reactors without a single failure that resulted in any radioactive release.
That is equivalent to the entire total number of civilian reactors deployed worldwide, but the Navy’s reactors are literally deployed in BOATS IN THE WATER, that continually move, rock, get shot at, etc.
There are non-trivial engineering challenges, but the core reality is that safe, clean, abundant nuclear is a matter of political will, intelligence, and organizational culture.