Under the streets of London, one innovative idea is sprouting up - an underground micro-farm producing greens. Could this be a new way of growing food, given the population growth and effects of climate change?
A network of World War II bomb shelters in London is utilised for very high tech farming.
Underground micro-farming in London started five years ago, and it has quickly taken roots as more and more British supermarkets and restaurants are signing up to buy the produce.
TRT World’s Simon McGregor-Wood has the story.