The third book in The Elements series from award-winner Grahame Baker-Smith guides readers on an unforgettable journey through our Earth's incredible evolution, discovering the planet's forgotten creatures, buried oceans and frozen layers. A small boy imagines life on Earth when dinosaurs ruled, and the sky boomed with the wild beat of pterosaur wings. Then an asteroid fell, changing the world forever. If Kun could go back further in time, he would witness an even bigger collision, when the young Earth was struck by another planet creating our companion moon... Following on from The Rhythm of the Rain and Wild is the Wind, Kate Greenaway award-winner Grahame Baker-Smith explores our ever-changing planet in this beautifully illustrated paperback edition.