That technology is nowhere near mature enough to provide a solution to the mentioned problems in the next decade or two.
Well of course not, now. I never said it would fix the now problems we face. Had we started in the 1950s, or even the 70s, the impact of climate change would have been negligible and likely mitigated entirely by changes to society that we can't possibly speculate given our current world. Unfortunately, money and greed played yet another part in destroying our futures by those who won't be around to see what they've done or simply don't care.
