In a series of vivid portraits of single-minded scientists, Dunn traces the history of human discovery, from the establishment of classification in the eighteenth century to today's attempts to find life in space. The narrative telescopes from a scientist's attempt to find one single thing (a rare ant-emulating beetle species) to another scientist's attempt to find everything in a small patch of jungle in Guanacaste, Costa Rica. With poetry and humor, Dunn reminds readers how tough and exhilarating it is to study the natural world, and why it matters.