Capitalism is based on infinite growth (economists even laugh at people like Malthus who proposed otherwise) and on fungibility of values (money is green no matter where from). This basically leads to a necessity of destroying nature for the sake of realizing economic growth. We need at least start to take seriously the fact that, the way capitalist economy is conducted, there is no way forward to save the environment.

I disagree. One could change the capitalist model to account and be liable for all externalities and to tax/penalize those firms/countries who refuse to.