Step into the invisible world of microbes and discover how viruses and bacteria shape our everyday lives. Packed with fun facts, exciting science, and kid-friendly explanations, this book makes the tiniest creatures on Earth easy to understand. From helpful bacteria in our stomachs to tricky viruses that cause illness, young readers will explore both the heroes and villains of the microscopic world. Perfect for curious minds aged 9 to 12 who love science and adventure!