Our lives are full of sounds. The rumble of car engines, a particular birdsong, the ‘ding’ of phone alerts, even the voices of our friends and family — these everyday noises become so regular we don’t ...

Old Beijing was a city of unique sounds -- sounds used to mark time, to advertise goods and services, or just to tickle the ear. In the run-up to the 2008 Olympics, Beijing is tearing down many of its ...