Please explain the text displayed below in simplest words

Please explain the text displayed below in simplest words.

Urban settings also offer environmental bene?ts. By living close together, we can save energy, resources, and space. Large apartment buildings occupy less space. They also use fewer raw materials and less energy per person than single-family homes. Transportation is more energy efficient when people travel shorter distances and when they have access to large public transportation systems. New green housing developments can benefit from new heating and cooling systems that reduce energy demand. One promising option is to make public transit free. If successful, such an approach would reduce traffic congestion, pollution, and accidents, lower road maintenance costs, and free up valuable space being used for parking lots.