Most of us have heard of green belts – but how much do we really know about them? This book tries to separate the fact from the fiction when it comes to green belts by looking both backwards and forwards. They were introduced in the mid-twentieth century to try and stop cities merging together as they grew. There is little doubt they have been very effective at doing that, but at what cost? Are green belts still the answer to today’s problems of an increasing population and ever higher demands on our natural resources?