The Next Great Migration'A dazzlingly original picture of our relentlessly mobile species' NAOMI KLEIN Fascinating . . . Likely to prove prophetic in the coming months and years OBSERVER A dazzling tour through 300 years of scientific history PROSPECT 'A hugely entertaining, life affirming and hopeful hymn to the glorious adaptability of life on earth' SCOTSMAN We are surrounded by stories of people on the move. Wild species, too, are escaping warming seas and desiccated