Science news roundup: Investment in vertical farming

Ocado sows $22 million 'vertical farming' seed to diversify

Britain's Ocado is ploughing 17 million pounds ($22 million) into the emerging "vertical farming" industry, further diversifying the online grocer and technology group's business. Vertical farming involves producing food indoors, with crops grown on a series of stacked levels in a controlled environment.

(With inputs from agencies.)