The world is drowning, as Arctic ice floes melt, the seas rise, and land disappears. 16-year-old Mara and her ship of refugees are tracking the North Star, desperate to find a homeland in the melted ice mountains of Greenland. The floating city of Pomperoy is just one of the shocks that are not in their navigation plans. Paperback , 339 pages Published January 1st 2008 by Young Picador (first published April 1st 2007)