Is it reasonable to be like someone who cut off the branch of the tree on which he sits? A phrase that one of the scientists described is what we do as a human being from the destruction of the environment, which pushes the extinction wave at an unprecedented speed. This book reviews a possible scenario for the extinction of the human race, which will not be the result of a meteorite crashing into the earth, or an epidemic, as we see the usual Hollywood scenario, but rather because of humans themselves.