<p>It's the middle of the twenty-first century, and the next Ice Age has suddenly sent global warming into reverse. Saul is one of the Ice People, the threatened peoples of the northern hemisphere, who, watching their world freeze over, try to move south towards the equator... 'Excellent ... intelligent, driven, imaginative, obsessive yet still gracious, one of our best ... Exciting stuff.' Fay Weldon 'Ambitious and subtle... She writes elegantly...