https://phys.org/news/2021-06-world-first-discovery-fuel-green-ammonia.html Vertical Farms can already grow food in skyscraper style vertical rows, that slowly move towards the bottom so people can easily get to them, which is great, because all the numbers say that the way we are currently producing food, cannot be sustained for more than another fifty years, and will experience shortages much sooner than that. This is one of the other more important pieces to the puzzle of how to feed the world, without destroying it! However, what we really need is a theory of everything to help juggle EVERYTHING without killing ourselves.
