40 percent of the world's energy is taken up by buildings currently, and 60 percent of the world's population will be living in buildings in cities with a population of over one million in the next 15 years.
40 peratus daripada tenaga di dunia dipakai oleh bangunan sekarang, dan 60 peratus daripada penduduk dunia akan mendiami bangunan di kota-kota yang berpopulasi melebihi sejuta orang dalam 15 tahun akan datang.