Vertical Farming
Growing food in stacked layers inside a building was once dismissed as a curiosity. Today vertical farms lettuce and herbs a few kilometres from the supermarkets that sell them. Because the crops are grown indoors, weather no longer the harvest, and pesticides are largely unnecessary. The method also up to ninety per cent less water than a conventional field. The obstacle is electricity: the lamps that replace sunlight are expensive to . Critics point out that a system depending on cheap power is to energy prices. Supporters reply that the technology is still young and that costs have fallen in the last decade.
