Frances Ashcroft is Professor of Physiology at the University of Oxford and a Fellow of Trinity College Oxford. She is also Director of OXION, a consortium of scientists studying ion channels, the heroes of this book. Her scientific research focuses on how a rise in your blood sugar level stimulates the release of insulin and what why this process goes wrong in diabetes. She has won many prizes for her research, most recently the L'Oreal/UNESCO 2012 Women in Science award. She is also a recipient of the Lewis Thomas Prize for Science Writing for The Spark of Life. Her first book for the general reader was Life at the Extremes- The Science of Survival.