Richard Ballard, Co-founder of Growing Underground, explains how the underground farm uses redundant urban spaces to feed a growing population sustainably and efficiently. Richard Ballard has started an agricultural revolution along with business partner Steven Dring in the form of Growing Underground. Located 100ft under the streets of Clapham in disused WW2 Air Raid Shelter, this subterranean urban farm sustainably produces micro-greens using the latest LED technology. The duo is now delivering fresh hyper-local produce to retailers and the London wholesale markets. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx