Although the rocks beneath us seem very strong and stable, they are constantly undergoing changes such as weathering, eroding, and breaking apart during earthquakes. This compelling and useful series is designed to complement lower elementary science curricula. The books explore Earth Science topics that kids can observe in the world around them, such as erosion and soil. The series covers high interest, kid-friendly topics such as volcanoes, gems, and dinosaur fossils. Sidebars offer extra information and each book has its own website with links related to the topic of the book.