A bright, lively introduction to our world with simple text, amazing photographs and detailed illustrations. Provides simple explanations to questions such as "Why is night dark?" "How do earthquakes happen?" and "What is under the sea?" Includes free downloadable pictures and internet links to carefully selected fun websites. Chapters in this book include: - Our planet - What's out in space? - On the Moon - Looking at the Earth - Day and night - The seasons - The weather - Storms and winds - Rocks and fossils - Earthquakes - Volcanoes - Following a river - Floods - Mountains - The seashore - Seas and oceans - Under the sea - Under the ground - Caves - In the desert - Grasslands - In the rainforest - Icy world - Rivers of ice - Cities and towns - Useful earth - The web of life - World in danger - World map