What would life be like if you had to do without modern inventions? How would you cope without a toilet or live without electricity? Starting from these thought-provoking questions, each title takes us on a historical journey to see how people coped in the past, and how they developed ingenious ways to make life safer and more pleasant. Key Features: Full-color cartoon-style original illustrations that make the books fun and attractive to reluctant readers A simple timeline providing an easily understood history of the subject A Top Tip offering helpful advice on what you should or shouldn’t do in a tricky situation A How It Works section explaining the science behind the technology A You Can Do It! section which describes a simple, safe experiment, or an action you can take to help make the world a better place A helpful glossary and index in each book