Millions of Aussies work at night: why aren't our cities built for them?

What if your work day is actually a work night? Four million Australians work between 6pm and 6am - from nurses and cleaners to delivery drivers and security staff. But the people who keep our cities running after dark are largely invisible in planning.Researchers from the University of Melbourne’s Night Shift project say it’s time to design cities that better support night-time workers. So what would that look like?