A reading experience of vast magnitude.Unbearably sad,beautifully written.This is a story of grief,hope what it is to be human.However it is not for the faint hearted as it deals in death on a massive scale.Especially the death of children which could be very disturbing for some.Realy though it is a story of hope for the future and our survival.Could become a classic of how time we are brave enough to read it.Four stars become I feel the ending was a bit lost.