Lu in 3 weeks, I did not let go! This book does not reveal anything that we did not already know if keeps abreast of world news. But he made a synthesis of all elements available to really be aware of the choices we have to do collectively. Individual choices (consumption and responsible attitude) are deemed extremely necessary but unfortunately largely inadequate. Hence the concern about the future of humanity, the future is not at all prepared and provided by the policies of world ... However, it is not hopeless! "The difference between an optimist and a pessimist? The pessimist finds every morning what is wrong, the optimist knows."