Give the gift of knowledge with Usborne's Science Encylopedia, containing the very latest information for junior scientists.- A comprehensive science reference book covering key topics from gravity, flight and floating to genes and DNA, with clearly written explanations and superb photographs and illustrations. - QR codes for each topic provide instant access via a mobile phone or tablet to over 180 video clips of experiments, animals in their habitats and animated lessons that enhance the information in the book. - Includes links to an additional 1000 recommended websites for further study and homework help via the Usborne Quicklinks website. With a glossary of 1,500 scientific terms, as well as key dates and biographies of scientists and inventors, and 140 simple experiments for children to try at home. - An exciting reference book that will stimulate children's curiosity and inspire the scientists of the future.