Within our bodies hides an entire world of organisms called microbes. They digest our food and protect our immune systems, and without them, we would die. Through Katie Brosnan's personable illustrations, we follow the digestive process from the moment the food enters our mouths to the moment the waste leaves our bodies. Along the way we are introduced to a variety of microbes - good and bad - and gain an insight into the vast ecosystem that exists inside us. Scientists are only now beginning to comprehend the significance of our microbiome. This is a gorgeously presented introduction to a most fascinating scientific frontier.