A fascinating exploration of the possibility of the microscopic world...This is not a book written to shock the reader, or to make the reader aghast at the number of microbes on their eyelashes, or in every breath they take. Rather, it is a book to prompt the restoration of the symbiotic relationship between the visible and invisible worlds, as well as the awareness and appreciation of what is contained within our microbiomes. -- Brian McHugh, Climate Thoughts with Brian Invisible Friends by Jake Robinson is just COOL. A journey through an ever changing understanding of the microscopic world. -- Charlie Bingham, nature and travel writer This is an enthusiastic and hopeful romp through microbiology that encourages readers to rethink their relationship with nature and see themselves as embedded in it. -- The Inquisitive Biologist Refreshing... This book is a must for students of microbiology. -- Arindam Mitra, Microbiology Today This volume is an excellent introduction to the microbial world... The text is accessible to a lay audience, and it has a useful appendix with further scientific explanations and reading suggestions. Robinson uses storytelling and integrated interviews with scientists to make each point. This book could be used as a text in a general education science course as a way to introduce diverse topics such as ecology, environmental science, evolution, human health, and psychology as well as the obvious microbiology. -- D. Schulman, CHOICE