We have alternative energy sources. We don't have the political will to invest in the energy transition. Or least to stop the subsidies for fossil fuels.

We need political will and regulation. A carbon tax will dissuade emitting carbon and steer investment into low carbon technology. Unfortunately, given our short-term political landscape, this looks highly unlikely to happen.

Nuclear: yes, it’s a huge shame that nuclear is in decline. Not sure how much is due to environmentalists over people being generally scared of the technology. The Fukushima disaster didn’t help its popularity.

Fukushima happened in 2011. The global anti-nuclear movement has been fighting tooth-and-nail against nuclear power since the 1970s:

https://en.wikipedia.org/wiki/History_of_the_anti-nuclear_mo...