Designing, building, and maintaining homes in the 21st century has to consider the wellbeing of residents and the environment.  From the heavy machinery required on building sites, to the rubble  of its demolition, every tonne of carbon consumed and released over the length of a buildings lifecycle can be accounted for.Dr Stefanie Weidner of Werner Sobek outlines the companies mission in sustainable engineering,  highlights their case studies for successful design, and discusses what the future of urban living might be.Read more at the Werner Sobek website.