Despite repeated warnings about the warming of planet Earth and the ensuing problems and calamities, the statistics show rising global energy demand and consumption. In addition, levels of carbon dioxide in the atmosphere, as well as other key greenhouse gases such as methane and nitrous oxide, are all rising. If these trends continue unchecked, the problems arising from global warming, such as the changes in climatic conditions and the melting of glaciers and ice caps, will intensify and the planet Earth will eventually turn into an inhabitable place. To deal with these problems, a global resolution and endeavor are needed to reduce the per capita consumption of energy and to cut down on the burning of fossil fuels, which are the main source of carbon dioxide emissions. Buildings can play a significant role in this issue because they use about 40% of global energy and they emit approximately 33% of greenhouse gas emissions. This chapter examines the environmental impact of buildings and describes how environmental sustainability can be considered during the design, construction, and operation of buildings. This issue is very important and this chapter can be a guide for engineers and designers to consider the issue of environmental sustainability when designing a building and selecting its equipment.
