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Mebiol have invented a system which allows farmers to grow food without soil and with very little water. This hydrogel film system means that farmers could grow vegetables and fruit in the desert. In a world in which water shortages and degraded soils are increasing this technology might soon become vital. Nick Luscombe meets Professor Yuichi Mori near Tokyo to learn how Japanese innovation is already producing highly prized produce such as tomatoes and why this system could help feed people in the harshest climates in the future.