Food of the future: London air raid shelter to underground farm

In an underground World War Two air raid shelter where London tube trains can be heard rattling overhead, aromatic coriander leaves tilt towards the pink glow of LED bulbs - a vision of how farms could look in the future. Zero Carbon Farms grows herbs and salads in Clapham, south London, a densely populated area with no room for conventional agriculture. But 30 meters below ground there is a kilometer of tunnels, and technology has made farming here a reality. Seven years after its first harvest, the company will soon double its growing space, ...

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