Did you know that keeping clean is one of the greatest inventions in human history? Join author Don Brown in this compelling instalment of the 'Big Ideas That Changed the World' series as he uncovers the murky, messy, and fascinating journey of sanitation. Through engaging graphics and clear explanations, this book reveals how humans moved from living in filth to embracing the life-saving habits of washing hands, treating water, and managing waste. You will discover the bold thinkers and revolutionary ideas that transformed global health, making the modern world possible. Perfect for young readers who love science, history, and real-life stories of innovation, 'Keep It Clean!' is both an educational resource and an inspiring look at how small changes can lead to massive global improvements. Packed with illustrations and historical facts, this graphic novel makes complex topics easy to digest while sparking curiosity about the world around us. Learn how the pursuit of cleanliness became a cornerstone of civilisation and explore the hygiene habits that help you stay healthy every single day.