The only thing we can do is slightly tweak the exponential adoption curve of solar, it's already here, already the cheapest option, already growing exponentially. We're right in the meaty part of the growth phase of solar and "moral" adoption pushes really don't have much to do with growth any more.

And also there are positives, CO2 is a potent fertilizer and there is plenty of land area which is uninhabitable and unsuitable for farmland which is going to boom with population and agriculture.

We're up for a century of change and migration and people need to change their tune from "oh no!" to "what's next?"

What's next is a lot of migration to the likes of Canada and Siberia and perhaps some active geoengineering building up the new locations around the globe for rainforests.

You have to let go of the past and embrace the future because crying about losing the Earth as it was 200 years ago will get you exactly nowhere.