長文読解（人文系・自然科学系の文章）- 問題94

Urban vertical farming has emerged as a revolutionary solution to address food security challenges in densely populated cities. This innovative agricultural method involves growing crops in vertically stacked layers within controlled indoor environments, utilizing advanced technologies such as LED lighting, hydroponic systems, and climate control.
The benefits of vertical farming are substantial. It uses up to 95% less water than traditional farming through precise nutrient delivery systems, eliminates the need for pesticides, and can produce crops year-round regardless of weather conditions. A single vertical farm facility can yield the equivalent of 10-15 acres of traditional farmland while occupying only a fraction of the space.
Singapore has become a global leader in vertical farming adoption. The city-state, which imports over 90% of its food, has invested heavily in this technology to enhance food security. Companies like Sky Greens have developed rotating tower systems that maximize sunlight exposure while minimizing energy consumption.
However, challenges remain. The initial setup costs are significantly higher than conventional farming, and energy consumption for LED lighting can be substantial. Despite these obstacles, experts predict that vertical farming will play a crucial role in feeding the world's growing urban population, which is expected to reach 6.7 billion by 2050.