Some parts of the Atacama desert in Peru have had no rain for more than 400 years. From dentists to insects to bacteria, this series tackles some of life's more unpleasant experiences--and explores how much worse it might be if they didn't exist. Each title is a blend of history and science, explaining how things work and revealing how humans have come to terms with all the challenges that nature has thrown at us! Key Features: Full-color cartoon-style illustrations that make the books fun and attractive to reluctant readers A simple timeline providing an easily understood history of the subject Top Tips offer helpful advice on what you should or shouldn't do in a tricky situation How It Works callouts explain the science behind the technology You Can Do It! callouts describe 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.