When you start to look at a lot of technological solutions to problems like environmental pollution, climate change, low-cost energy, healthy food production and distribution, you realize that most of the challenges are not technological in nature, but social and political -- basically human nature (fear and greed).

(This is another reason why the idea that's been floated that "AI" or the near-mythical "AGI" will "solve the world's problems" is fallacy -- unless of course by "solve" it means "make a few companies extremely wealthy at the expense of everyone else".)