[mpweiher]

On the whole, nuclear power has saved many more lives, over 1.8 million up to 2011.

https://www.giss.nasa.gov/pubs/abs/kh05000e.html

And the worst power-production disaster in history so far was neither Fukushima nor Chernobyl, but the 1975 Banqiao Dam failure. And it's not even close.

https://en.wikipedia.org/wiki/1975_Banqiao_Dam_failure