Thank you audible. I have been waiting years for the audible version of this novel, and am not disappointed. In my opnion this is Bear's best work. ..Show More » A perfect balance of science and drama, with very compelling characters. It builds slowly but brilliantly to its inevitable, terrifying, and heart breaking climax. Though it is bleak in some ways, and frightening, there is the ever present flicker of hope throughout. It is thoughtful, intelligent and haunting... A science fiction classic.