WATCH: Israeli Firm Eyes Vertical Gardens As Future of Farming

The Times of Israel reports: As a kid, I always loved Legos, and this is just like Legos,” Guy Barness said excitedly as he stacked a block of succulent plants on top of a block of grass, next to a block of ornamental plants, on a wall designed to hold vertical gardens, or green walls if you will.

Barness is CEO of the aptly named company GreenWall Israel, which creates unique vertical plant installations, including a 840-square-meter (9,000-square-feet) vertical farm that was the centerpiece of Israel’s exhibition at the 2015 Milan EXPO. The separate blocks of plants, which can be arranged and rearranged at whim, are the company’s trademark vertical garden system.

Still riding the momentum of the Milan EXPO, Barness is focusing on the possibility of building green walls not just for decoration, but as vertical farms that can be a partial solution to food insecurity and provide for increasingly urbanized societies.

According to the United Nation’s World Urbanization Prospects, 54 percent of the world’s population currently lives in urban areas. This is an increase from 1950, when just 30% of the global population lived in cities. By 2050, 66% of the world’s population is projected to live in metropolises. By 2030, the world is expected to have 41 mega-cities, with 10 million inhabitants each.

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