Vertical farming, the best solution to support an ever growing population or just a scam?
IMHO it has a lot of potential but not being able to grow grains really is something that should be tackled sooner rather than later. But I could see this being used by self sustaining communities to provide lots of food while using very little space. And it's technically more environmentally friendly than just using vast stretches of land to produce the same amount of food.
Geography, geography, geography. It completely depends on where you live. Remember, climate change doesn’t just mean hot and dry. Some places will get dry, some will get wet. There will be winners and losers.