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.
How do you think factory farms and family farms differ?
Most farms are family owned corporations. Anything else is either stupid accounting, or Low productivity (the Amish is the most obvious example of low productivity farms that are generally not corporate)