Not your average science book, this in-depth analysis of the smallest living things in our world, gives captivating insight into the wonderful world of microorganisms. Focussing on bacteria, fungi, protists and viruses, it explains some of the biggest diseases of our time as well as the processes of protecting ourselves.• Pearl/Band 18 books offer fluent readers a complex, substantial text with challenging themes to facilitate sustained comprehension, bridging the gap between a reading programme and longer chapter books.• Text type:• Curriculum links: