What are the major plants and animals on which humans subsist? Where do these plants and animals come from? This book addresses these and other questions related to food. It does so in a highly readable format, assuming no prior botanical or zoological knowledge. It organizes the discussion along chapter topics such as "Grasses: The staff of live." Learn that yams have served as a source of steroid hormones, that sugar is a grass from the South Pacific and observe how cauliflower, kale and brussels sprouts all derive from a single plant species. On the down side, this book's treatment of genetic engineering is outdated and the faith given to improvements in crop production not well reconciled with a concluding chapter on food problems, e.g. pesticide use. But these weaknesses are outweighed to the reader seeking a concise, interesting overview of the foods on which we subsist.