Sleep is a core biological function that cannot be overcome by willpower alone. Shift work is necessary in our 24/7 society yet comes with significant risks ...

Train and bus drivers, doctors and carers, employees in companies where machines run around the clock: In many industries, people work in shifts. Some start early in the morning, or at midday. Others ...

For many, working at night is part of their daily routine. Doctors, nurses, factory workers, security guards, and call centre staff often keep cities running while others sleep. But science is now ...