30 amazing topics for Earth explorers explained in half a minute. In this exciting title for young Earthlings, every inch of our planet is explored and explained, from the air in the atmosphere to the molten magma beneath our feet. 30 key topics from deserts to oceans are covered, each presented in neat 30-second soundbites and supported by 3-second flash summaries and cool, colorful artwork. The attention-grabbing format is engaging and immediate, giving a truly global understanding to readers aged from 8 up. Six themed sections cover the Earth in Space, the Earth's Structure, Weather and Climate, Watery World, Amazing Ecosystems and the Future of the Earth. The Know It All takes a revolutionary approach to learning about the subjects you really feel you should understand but have never gotten around to studying. Each book selects a popular topic and dissects it into the 50 most significant ideas at its heart. Each idea, no matter how complex, is explained in 300 words and one picture, all digestible in under a minute.