Green/clean energy does not exist. The only thing that has somewhat +/- zero impact is (edit: small scale) hydro. But hydro also requires hydrocarbons to build

Green/clean energy does not exist. The only thing that has somewhat +/- zero impact is (edit: small scale) hydro. But hydro also requires hydrocarbons to build and maintain (don't forget the powerlines) and freshwater fish populations are impacted. The population will go down to 1 billion from here, that much is inevitable. The question is how fast it goes down and how much people will suffer: we peaked our growth-rate in 1968: https://ourworldindata.org/future-population-growth https://ourworldindata.org/future-population-growth