Virtual cities: Designing the metropolises of the future

Simulation software that can create accurate "digital twins" of entire cities is enabling planners, designers and engineers to improve their designs and measure the effect changes will have on the lives of citizens. Cities are hugely complex and dynamic creations. Think about all the parts: millions of people, schools, offices, shops, parks, utilities, hospitals, homes and transport systems. Changing one aspect affects many others. Which is why planning is such a hard job.