Today, in our environmental science lecture, we'll discuss the impact of urban farming. One key study found that rooftop gardens can reduce a building's energy consumption by up to 30 percent, mainly by providing insulation. However, the initial cost of setting up such a garden is quite high, often exceeding 50,000 dollars for a medium-sized roof. Despite this, the long-term savings on energy bills and the reduction in stormwater runoff make it a viable option for many cities. Another benefit is the local food production, which cuts transportation emissions.
❓ Según la conferencia, ¿cuál es la razón principal por la que los jardines en las azoteas reducen el consumo de energía?
A. A. Producen alimentos localmente, reduciendo las emisiones del transporte.