Book excerpt: The Kingfisher Young People's Book of Planet Earth is an exciting and colorful guide to our planet. No stone is left unturned in this fascinating survey of the elements that comprise the Earth, from its origins in space as a swirling cloud of gas and dust, to the dynamic, living planet we know today. Adults and children alike will be thrilled by the dramatic visuals, and the quality of information presented in each fact-packed, full-color spread. Children will discover detailed answers to their questions, whether it's how the world was formed, why dinosaurs became extinct, or why weather changes from one day to the next. Sections on conservation and the environment provide a complete picture of the interaction of life-forms on Earth, and detail the ways human beings can attempt to preserve a habitat for all creatures. Also includes a factfile, and glossary.