Book excerpt: From childhood we are told that humans have five senses: hearing, sight, smell, taste and touch. But your school teachers were wrong. All of us have at least thirty-two senses - and our survival depends on them. In Super Senses, award-winning science journalist Emma Young explores our surprisingly rich sensory lives. She discovers why the main function of our ears isn't for hearing; how we can find taste receptors in places other than our tongues; how improving your sense of smell might increase your enjoyment of sex; why the semi-nomadic Himba people can't distinguish between blue and green but Russians can see two shades of blue; and how touch can confuse the way your brain registers pain. She also delves into the 'new' senses - including balance and internal-sensing - without which you'd be dead within minutes. And by exploring the lives of people with sensory over-sensitivity to those who feel no emotion at all, Young shows that our senses don't simply inform us, they form us. Traversing cutting-edge research and drawing on the experiences at the extremes of the sensitivity spectrums, as well as stories from history and anthropology, Super Senses takes readers on a journey that will make them see themselves, and the world around them, through entirely fresh eyes.