"It is important to realise the scale of impact that our professional activities have on the climate. Buildings and construction presently account for around 40% of energy-related CO2 emissions.
Deep changes across the design, construction, use and reuse of buildings and infrastructure are required if we are to have any chance of providing a sustainable environment for the 9.7bn people, including 6.5bn city dwellers, who will share our planet in 2050." - institution of structural engineers IStruct E Guide www.istructe.org 2020.