What is green infrastructure? Why should we develop it? Who uses it? And what socio-economic and ecological value does it provide? This useful guide provides an essential introduction to green infrastructure for planners, landscape architects, engineers and environmentalists keen to understand how we can use landscape principles to deliver more sustainable urban planning.Using multiple examples from practice in the UK, Europe, North America and Asia, the book illustrates how good policy ideas and innovative planning practice can help create more sustainable and ecologically focused urban landscapes.