Thanks to National Public Radio (USA) for this story on their weekly program called The Salt:
From plant factories fueled by the magenta glow of blue and red LED lights, to the 30-foot tall Ferris wheel for plants in Singapore, we’ve shown you the design possibilities for growing vegetables up instead of out.
But critics ask, what kind of stresses does that put on the plant? And how do you feed this kind of intensive cultivation without spending more than what you get back in the harvest?
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