As to the main point, as sibling has said, at this point regardless of what we do the climate will be anthropogenic (unless you believe people who say we don't influence it much). There is no return to being naive and innocent about it. The notion that there is some privileged way to act "in harmony with nature" is fictitious and purely human cultural psychology. The current mainstream solutions are also based on thinking that we understand some things and can predict what would happen if we do X or Y.
If I wanted to be cheeky I would say we know very well now how to heat the atmosphere if need be, but actually I defer to climatology research and modeling to resolve any of this.