An employee checks on a head of romaine lettuce at a company’s plant for cultivating vegetables in Tokyo, Japan. (Photographer: Haruyoshi Yamaguchi/Bloomberg)

Lettuce-Farming Robots Might Grow Your Next Salad

(Bloomberg Businessweek) -- Your next salad might include leafy greens grown by robots in California greenhouses. About 75 percent of the lettuce farmed in the U.S. comes from that state’s Central ...