What on Earth Happened? - The Complete Story of the Planet, Life and People from the Big Bang to the
                                
                                
                             
                            
                         
                            
                            
                        How old is the universe? How are humans related to a sponge? Where did most of the world's water come from? How much would a complete T Rex skeleton cost? Where did the Himalayas come from? Which came first, the chicken or the egg?