I think maybe if you had a passionate director behind it who was a fan of the book and actually was skilled in adapting books to film then maybe you would get a decent product out of it. A Wrinkle in Time just reminds me too much of Dune in this department: a really great book, but one that is incredibly difficult to adapt to film. It was written for the novel medium, it should stay in the novel medium.
No. He never explains how we obtain any of these things, because he can't. These things he envisions are impossible to actually obtain because it's physically impossible. He doesn't actually understand how real life works, his mind is entirely built around fiction and thus his "vision for a superior future" lacks any ground in actual reality.
A great example: the "turn all of New York state into Manhattan" shit. That entire idea was thoroughly ripped to shreds by
@LordKaT on an
episode of his podcast awhile back. It was not only pointed out just how many problems arise from this idea if it was a reality, but how impossible it was for that concept to actually become a reality in the first place.