Did you know about the farms on the rooftops of New York City buildings? In large cities, rooftops absorb solar energy causing the temperature of the building to rise. It leads to increase the frequency of use of air conditioning equipment in the summer. When a rooftop farm is created, the plants on the rooftop absorb heat energy, reducing the temperature of the city, and reducing environmental problems such as the urban heat island phenomenon. In addition, the plants and soil of the rooftop play a role in storing rainwater and reducing damage from typhoons and floods.