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26 May 2014
A GREY warehouse in an industrial park in Indiana is an unlikely place to find the future of market gardening. But it is, nevertheless, home to a pristine, climate-controlled room full of eerily perfect plants led light from china. They grow 22 hours a day, 365 days a year in 25-foot towers, untouched by pests and bathed in an alien pink light.

Critical to this $2.5m techno-Eden, run by a firm called Green Sense Farms, are the thousands of blue and red light-emitting diodes (LEDs) supplied by Philips, a Dutch technology firm. The light they give off is of precisely the wavelength craved by the crops grown here, which include lettuce, kale, basil and chives.

The idea of abandoning the sun’s light for the artificial sort is not new. It...

19 Jun 2011


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