1) The document discusses the development of a quantitative greenhouse gas assessment tool to help evaluate the climate change impacts of spatial planning policies in Scotland. 2) It was developed by the Scottish Government, Scottish Environment Protection Agency, and consultants to provide a simple yet robust methodology for quantifying greenhouse gas emissions from different planning scenarios. 3) The tool provides relative, not absolute, emissions outputs and is intended to help identify how planning policies could significantly reduce emissions or the likely emissions consequences if a policy cannot be changed.