Unpopular opinion in some circles: if you don't take nuclear power seriously or outright oppose it, then you don't take climate change seriously.
My instinct is to sing nuclear energy's praises, but isn't the real issue the hurdle of the massive upfront investment? Which might have been as bad if we continued investing in the development of nuclear power, but we didn't because of the negative public sentiment, oil/gas lobbying, etc.
Is it also the idea that getting the electricity to where it needs to be is still a big issue so its better to have lots of small power sources close to the demand rather than massive powerplants that can't efficiently transport their power far distance?