Nuclear is far from the best source of electricity, but it is far less damaging to the environment than coal or NG if handled and designed properly. If countries can work together to put them in places that protect from major earthquakes or other natural disasters then I think we can get some decent movement on reduce GHG emissions from power plants.
One nice thing about a molten salt reactor like China is building is that the dangerous fission products are chemically bound in the salt. If some external event breaks the reactor wide open, the salt cools and you just have radioactive rocks there on the site, instead of a radioactive cloud over a large region.
[0] https://en.wikipedia.org/wiki/Boiling_liquid_expanding_vapor...