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, colourful 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.