And if humanity disappeared overnight from the surface of the Earth, what would happen to the planet? That is the theme chosen to tackle Alan Weisman, science journalist, who through his book considering the consequences that would leave the passages of humans on Earth. What monuments and what traces found another civilization of our thousands of years after our visit? What will it tons of plastic dumped in oécans, buildings of Manhattan or nuclear power plants? How men have changed the climate by their presence (and pollution)? Here are some of the questions this raises Alan Weisman. If the book is accessible to the greatest number, be careful though, because some passages are "hard" (often requiring prerequisite physics / chemistry / mathematics) and many will probably have the impression to remain in their default hunger to assimilate the data. An excellent book that is cold in the back.