Over half of the world's population live in cities, a figure that’s set to rise to two thirds by 2040. Each city’s infrastructure is under pressure to provide for an ever increasing population. This series looks at the ingenious engineering that enables cities across the globe to function. We turn on the shower and there’s clean water. We get the train, tube, light railway into the office. We boot up the computer and there’s power. We expect all this stuff to happen…and when it doesn’t there is chaos. Each hour long program will feature remarkable pieces of engineering that reveal how all the things we…

Over half of the world's population live in cities, a figure that’s set to rise to two thirds by 2040. Each city’s infrastructure is under pressure to provide for an ever increasing population. This series looks at the ingenious engineering that enables cities across the globe to function. We turn on the shower and there’s clean water. We get the train, tube, light railway into the office. We boot up the computer and there’s power. We expect all this stuff to happen…and when it doesn’t there is chaos. Each hour long program will feature remarkable pieces of engineering that reveal how all the things we take for granted happen without us knowing…and how new solutions are being found to new and pressing problems.