Food often comes from far, but that is not always necessary. In the Klokhuis episode of 29 December 2016 attention was paid to alternatives like a roof-garden and a fish-farm combined with a greenhouse on a roof. The possible role of energy-efficient LED lamps in this kind of new initiatives in the field City farming was presented by Leo Marcelis of the HPP group of Wageningen University.
You can watch the Klokhuis broadcast of 29 December via
The interview with Leo Marcelis starts at about 10 minutes.
This program is presented in Dutch only.