Afactoryworkerchecksthegrowthofleaflettucesunderredlight-emittingdiodes(LEDs)atavegetablefactoryinthetownofHikari,some50kilometreseastofTokyo.Thelettucetakesamonthtogrowfromseedtoharvest,threetofourtimesasfastasoutdoorversions,andrequiresonlyateamof10-15workerstohandlealoadthatwouldnormallyrequire120farmers,thedeveloperssaid.
東京東面五十公里的光市，一間種菜工場一名工人檢查在紅發光二極體下的葉萵苣生長過程。發展商說，這種葉萵苣由種子成長至收割需一個月，速度是戶外種植三至四倍，而一般要一百二十名農夫處理的工作量，現只需十至十五名工人。