> In the past 20 years we have seen significant progress in slowing down, or even reducing for some countries, the emission of CO2. It is not enough, but it's definitely significant. This happened thanks to the many, via awareness campaign and political pressure.

I’m guessing this has nothing to do with awareness campaigns and everything to do with the relative price of coal, natural gas, and renewables. People just did whatever was cheapest, and that meant switching away from coal.