Making sense of the many weird and wonderful interactions that inform our view of the world, this episode is all about perception. The team opens with the incredible noise of a binaural sound, to illustrate the subtle complexity of the way we hear the world around us. They then put perception under the microscope, zooming in at a quantum scale where life becomes nothing more than pixels. And they wrap up with a fascinating discussion about metacognition, or put simply, how much we know about what we know. On the pod are Timothy Revell, Anna Demming and Clare Wilson. Find out more at newscientist.com/podcasts.