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[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_049[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_049[/audioFiles]
游客
2023-11-04
24
管理
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Vertical Farms
By the year 2050, nearly 80% of the earth’s population will have resided in urban centers. / An estimated 109 hectares of new land will be needed to grow enough food to feed them, / if traditional farming practices continue as they are practiced today. / So, an entirely new approach to farming must be invented, / employing cutting edge technologies. / The concept of indoor farming is not new. / What is new is the urgent need to scale up this technology / to accommodate a fast growing number of people. / Vertical farming was thus invented. / Rice on the seventh floor, wheat on the twelfth, / and enough food within an eighteen-story tower to feed a small city of 50,000. / Vertical farms must be cheap to construct and safe to operate. / If successfully implemented, they will offer the promise of urban renewal, / sustainable production of a safe and varied food supply, / and the eventual repair of ecosystems that have been sacrificed for horizontal farming.
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