Delta is an ancient fun loving bacterium with a big big future ahead. Over a billion years ago Delta played rough games with good friends. They ended up forming relationships that changed life on Earth forever. One of a series of illustrated books for early readers introducing children to the extraordinary and foundational hidden universe of microbiology. Based on the theory that Deltaproteobacteria formed endosymbiotic relationships resulting in the evolution of mitochondria and multicellular life (including dinosaurs!), our primordial romp written by Professor Mike Manefield and illustrated by Tallulah Cunningham introduces children to one of the major events in the history of life on Earth. This soft cover saddle stitched book has 20 pages, measures 16x16 cm and includes non-fiction information about the story plus an image of the bacterium the narrative is based on. Perfect for reading to infants or for children learning to read. Even university students find them helpful to start imagining life on a microscopic scale.