It's the end of the world, our world is to say that of Man. Just not much, a piece of DNA (virus) or a protein (Prion). In this book the river, the story centers on a dozen characters, we witness their attempt to survive in a nature which finally cleared of parasites (human) reasserts itself. The end is open, survival or not a path in humanity appearance I can not decide. The style is precise, jubilant, poetic, technical, ... according to the chapter and the characters involved, it is a pleasure renewed. Andrevon is a serious and cultivated type, he does not hesitate to detail certain technologies or describe macroscopically (about ten pages) decay of a dead human body. I love this novel. I also recommend including SIMAK Clifford and Tomorrow dogs or BARJAVEL or BALLARD ...