With global demand for food set to increase by nearly 70% by 2050, sustainable food production is one of the biggest challenges for the future. The food industry is one of the most ecologically damaging industries and we will need to completely rethink its approach if we are to keep meals on the table for generations to come.

"Food is the single biggest impact that humans have on nature. We are deforesting the earth to grow more food. It's by far the biggest user of fresh water, the single biggest source of carbon dioxide emissions, and the biggest reason why we're in the middle of the mass species extinction event, the sixth that planet Earth has faced. At least a third of the world's food is currently being wasted," says Tristram Stuart, food waste campaigner and author.

Two alternative projects in Finland and Italy are paving the way for the food of the future. This episode explores potential new strategies to satisfy the growing food demand, from restaurants growing potatoes in the air to serving jellyfish as a sustainable meat alternative.