I'm not being snarky, I mean it. Bucky Fuller calculated that we could solve most of the world's problems for about $25B (this was in the 70's, so adjust for inflation and whatnot).
He was thinking big: houses built in factories (like cars) and delivered to the site by helicopter. You could roll out a whole neighborhood in a week or two. They had waterless toilets that captures BMs in little plastic bags, hyper-efficient "fog" showers. ( Legend has it that the project was spiked because it would put too many electricians and carpenters and so on out of business. )
I'm not being snarky, I mean it. Bucky Fuller calculated that we could solve most of the world's problems for about $25B (this was in the 70's, so adjust for inflation and whatnot).
He was thinking big: houses built in factories (like cars) and delivered to the site by helicopter. You could roll out a whole neighborhood in a week or two. They had waterless toilets that captures BMs in little plastic bags, hyper-efficient "fog" showers. ( Legend has it that the project was spiked because it would put too many electricians and carpenters and so on out of business. )
Or see his Old Man River's City project ( https://en.wikipedia.org/wiki/Old_Man_River%27s_City_project https://solutions.synearth.net/2002/11/24/ ) A city in a single building with ten million square feet of enclosed open space. Add some applied ecology ("Permaculture") and you've got an arcology ( https://en.wikipedia.org/wiki/Arcology ).
We have pretty much all the answers, the problem is to align our power with our values.