As far as we can tell, the earth is the only planet in the solar system where life exists. It is home to around 1.7 million known species, all kinds of plants and animals, and over 6 billion people. But before people appeared on the scene, what was here? How old is our planet? Discover the fascinating adventure of life on earth - the origins of the universe, how life forms evolve, fossils, the food chain, cloning and more, in this humourously illustrated title which has been translated from the French.