For comparison, the Banqiao Dam failure (the largest dam failure in history) killed as many people as the sum total of every nuclear power plant failure and every atomic bomb ever used, combined.
Lower than wind and solar.
1.) Dam breaks devastate much smaller areas. So even if the human toll is the same, the amount of infrastructure lost is smaller.
2.) The area is unlivable (or even inaccessible) for a much smaller duration of month instead of millenia.
Maybe land lost "forever" (on the timescale of individual human lives) is not a big problem in some part of the world, but in densely populated areas (any they need the most power, so would have MORE reactors per area) you can not simply block off an area the size of Belgium because a reactor exploded. This makes nuclear power a lot less attractive in India, Europe or (coastal) China.
> 2.) The area is unlivable (or even inaccessible) for a much smaller duration of month instead of millenia.
Millennia of uninhabitability is anti-nuclear propaganda. Most of the zone will be reinhabitable within a century of the accident, and much of it is already inhabitable again but still excluded out of safety margin concerns.
[1] https://thoughtscapism.com/2019/05/08/worlds-worst-energy-ac...
Citation needed. WHO says up to 4000 early cancer deaths total from Chernobyl. 2.5x larger cancer fatalities would be hundreds of thousands if not millions of people which is not seen by any credible study that I'm aware of.
My ex grew up in Gomel and didn't get cancer. Neither did her parents.
http://irbis-nbuv.gov.ua/cgi-bin/irbis_nbuv/cgiirbis_64.exe?...
My brothers were unable to escape. Younger brother had problems with thyroid, but survived. (I had problems with thyroid too, but at much smaller scale). Older brother had brain surgery about two months ago, but it's unknown is it helped or not yet.
If terrorists were in possession of such amounts of powerful explosives, and a capacity to place them inside a highly guarded area, they could use that to blow up a city center to a much greater destructive effect.
Practical Engineering on Youtube is a great overview of the issues we humans have with water: https://www.youtube.com/user/gradyhillhouse/playlists
Of interest here are these videos:
https://www.youtube.com/watch?v=eImtYyuQCZ8&list=PLTZM4MrZKf...
https://www.youtube.com/watch?v=0EzoHXEzdwY&list=PLTZM4MrZKf...
https://www.youtube.com/watch?v=EACkiMRT0pc&list=PLTZM4MrZKf...