It's happened in the UK (£18/tonne of CO₂ equivalent) and Canada (varies per state), and probably others. UK total CO₂ emissions are below 1900 (!) levels, most

It's happened in the UK (£18/tonne of CO₂ equivalent) and Canada (varies per state), and probably others. UK total CO₂ emissions are below 1900 (!) levels, mostly due to many people switching to green energy, and substituting what coal remained with natural gas, which is most efficient power per tCO₂ among the fossil fuels. Don't give up hope :) keep bringing up carbon price whenever relevant. The tide of public opinion will turn. Late, as always, but it will turn. People didn't think a black man could ever be president but lo and behold you did it. You just need to keep telling people that there is a solution, and that it is carbon price. Keep beating the drum.