If there’s one sense that’s omnipresent in our lives, it’s hearing. Yet its powers and development are often poorly understood. As early as foetal life, did you know that our memory begins by being auditory, to prepare us for life? While we sleep, our hearing remains alert, but why do some sounds wake us up and others don’t? Hearing, listening: what seems so obvious actually depends on a fragile and complex system that works at the speed of sound. From listening to the first articulated words to detecting sounds from the infinitely large, guided by specialists who explore, heal or invent every day, let’s set off to discover a world where we’ll be all ears!