Put me in charge. I'd convene the richest and the smartest self-aware people in the world to brainstorm about what to do. I am on your wavelength and I would facilitate accordingly -- as well as supply some of my ideas for them to consider.
To save the world, we need to invent new machines that will allow us to stop using so many fossil fuels like solar panels. Anything from making the solar panels cheaper or new inventions are needed to Save the World.
If we wish to save the world, one step that is absolutely essential is that we remove our planet and ourselves from the ongoing threat of a nuclear war. Nine to ten near misses have been documented. War is obsolete. Conventional war. Civil war. Nuclear war. All war.
If we wish to save the world, we need perspective, and an elegant, all-inclusive worldview. Watch this video and comment below.