[lpcam33]

You could place the externalities directly on an UBI (universal basic income). This would address a problem of redistribution of the tariffs income. France had the yellow jackets because people are tired of not knowing were taxes income go (normally to the very rich.) If we implement externalities to level of what IPPC advices there will be unemployment, but work like the economy is just another mean to an end. Right now the big problem is ecological.

[groestl]

Well, in the long term externalities wouldn't yield much money, and instead move allocation of capital to methods of production with minimal external costs.

[lpcam33]

It would promote the local economy (the one with less externalities). That would created meaningful jobs, jobs that you know have a propose. Yes we could not buy cheap clothing every weekend or go to a 3 day holiday in the south of Europe 4 times a year but we don't need to. What we need to live within the boundaries of the planet.