Researchers are predicting an increase in urban agriculture. In the future, vegetables could be grown in high-rises or in urban wasteland. Other innovations include algae farms that produce vegetarian sausages.
It involves growing plants on top of each other, rather than side-by-side - a technique that doesn’t necessarily require any soil. Water is circulated in a closed-circuit system, leading to less wastage. In some cases, fish provide the plants with nutrients. Vertical farming, along with other innovations like cultivating algae, offers an alternative to conventional farming.