All across the world, irreplaceable habitats are under threat. Unique ecosystems of plants and animals are being destroyed by human intervention. From the tiny to the vast, from marshland to meadow, and from Kent to Glasgow to India to America, they are disappearing. Irreplaceable is not only a love letter to the haunting beauty of these landscapes and the wild species that call them home, including nightingales, lynxes, hornbills, redwoods and elephant seals, it is also a timely reminder of the vital connections between humans and nature, and all that we stand to lose in terms of wonder and wellbeing. This is a book about the power of resistance in an age of loss; a testament to the transformative possibilities that emerge when people come together to defend our most special places and wildlife from extinction.