We have all studied human flaws. The opportunity to evolve systems and character to save ourselves is small. As an example we only have to look at superstitions, governments, and multinational corporations. They will kill any system or character that advances humanity.

Nuclear powered hydrogen generators can save the planet. Vending HHO bottle as propane bottles are exchanged is the no brainer model. No one mention cold fusion. It has already been killed by the above example. All hydro carbons, people, trees, cooking oil, etcetera will kill the planet.

Maybe if one world constitutional republic, no still the above example.

Good luck to us all. No a bunker will not help. Virgin Corporation is trying. But it looks like we will run out of time.