Production, consumption and disposal of fuels. Is it coal mined in some shoddy third world mine, could things be improved with better technology? (nuclear power

Production, consumption and disposal of fuels. Is it coal mined in some shoddy third world mine, could things be improved with better technology? (nuclear power received a lot of research money, can the same be said for other power sources?). Environmental impact (oil spills - blame on power plants, or on cars?). Quality of life (just surviving is not enough). Sustainability (nuclear power also seems to be a limited resource). small chance for big damage (nuclear power) vs higher chance for lower damage (fossile fuels). And so on - honestly, I am not an expert on this stuff.