Each book in this series follows a packet of energy along a journey. Each stage of the journey is described in a short chapter, and we learn what alternative paths the energy might have taken along the way. This book shows how sunlight is turned into a movie. It...Read more

Each book in this series follows a packet of energy along a journey. Each stage of the journey is described in a short chapter, and we learn what alternative paths the energy might have taken along the way. This book shows how the energy in wind is turned into...Read more