Every morning, ecologist Tim Blackburn is inspired by the diversity contained within the moth trap he runs on the roof of his London flat. Beautiful, ineffably mysterious organisms, these moths offer a glimpse into a larger order, one that extends beyond individual species of moth, beyond lepidoptera or insects, and into a hidden landscape. Just as Michael Faraday's iron filings arrange themselves to articulate a magnetic field that would otherwise be invisible, Tim shows us that when we pay proper attention to these tiny animals, their relationships with one another, and their connections to the wider web of life, a greater truth about the world gradually emerges into focus. In this book, Tim reflects on what he has learned in the last thirty years of work as a scientist studying ecosystems and demonstrates how the contents of one small box can illuminate the workings of all nature.