On December 3 TEDxMelbourne explores the idea that the unseen is not necessarily unknown. Is the ocean in dangerous bloom? Will Australia make the unequal equal? Can singing change your brain? Does sound have a shape? Join us for an afternoon of speakers and performers, hosted by past TEDxMelbourne speaker and renowned MC Zara Grose, at the Melbourne Recital Centre, Southbank. Special musical performance by Tommy Emmanuel.