By 2050, over two-thirds of the human population will be living in cities. Nature can help shelter urban dwellers from the worst impacts of climate change and enable them to lead healthy, fulfilling lives. The new IUCN Urban Nature Alliance will help carve out more space for nature in urban areas, and accelerate the move towards green, liveable cities that are urgently needed across the globe. We are delighted to be working with the Scottish Wildlife Trust on this important project and express our sincere appreciation to the Arcadia Fund