The Scottish Government has published a Climate Change Bill which sets mandatory targets to cut greenhouse gas emissions in Scotland by 80% by 2050. We welcome this as an opportunity for Scotland to lead the way in climate legislation. The Big Ask Scotland is Friends of the Earth Scotland’s campaign for an effective Climate Change Bill. In principle the Bill includes emissions from international aviation and shipping, and includes all greenhouse gases (GHGs), not just CO2. Yet it is not clear if the Scottish Bill includes emissions from international aviation and shipping. This briefing outlines why the inclusion of all sources of emissions is fundamental to the effectiveness and credibility of the Bill.