vertical farms

Vertical farms established by AeroFarms in the US can harvest 900 tons of green leafy vegetables a year without soil, pesticides or sunshine.

Crops and fruit trees may soon be grown in greenhouses the size of buildings in city centers around the world - according to the Daily Mail of the UK.

This form of farming is considered as a solution to the difficult problem of world food demand and scarce agricultural land.

Compared to farms that operate in the old way, which depends on the land and sunshine, high-tech farms produce 100 times more, using only 5% of normal water.