How about a scene of the future… a vast green forest (of young trees) with a gleaming city poking out of the horizon.
There’s a clearing with a camp fire in the middle. An old geezer and his grandson are camping. He’s saying ….
“Of course, when I was a lad, all this was oil derricks and desert… until they built the fusion desalination plant.”
Fusion. Energy to spare for the necessities.
