It’s definitely a massive worry, and to be honest I think it’s more likely than not that we will all end up fighting over dwindling, or at least shifting resources as climate change impacts food and water distribution around the planet.
But in principle there is enough energy coming from the sun to feed us and give us the power we need for our high tech lifestyles. The challenge will be capturing it and distributing it fairly.
So I am imagining a future without necessarily providing instructions for how to get there, which is a lot easier 