What is weird to me is that the technical solutions are there. They are known, they are old. And they are opposed.
As an engineer I would like to help, but after being asked to sign a petition against nuclear power, against a solar power plant, against electric vehicles, and hearing environmentalists complain about wind turbines, stating batteries will never be a solution, inventing resources depletion problems (for non-fossil materials there is zero depletion problem) I am really wondering if we do want to solve the problems.
There are many scenarios towards a renewable future that are totally doable. From the "business as usual, just replace fossils with renewable electricity" to an ungrowth scenario, a whole spectrum in between and for all a nuclear option depending on your preferences, it is only a matter of political will.