In the Netherlands, kitchen gardens grown on urban roofs

Only last week we saw New York company BrightFarms offering a service to supermarkets that designs, finances, builds and operates hydroponic greenhouse farms either on the supermarket roof itself or atop distribution centers. Now, on a slightly smaller scale, Dakboerin in the Netherlands are working with residents, schools, offices and restaurants to build rooftop kitchen gardens in areas where growing space is scarce.