Johanna Lissinger is Sweden’s climate change Ambassador for Stockholm +50 and the chief negotiator for the Swedish delegation at the international climate negotiations. She has extensive experience as one out of three chief negotiators for the EU with responsibility for climate finance. In a wide-ranging interview Ambassador Lissinger explains why time is running out in our efforts to mitigate the worst impacts of climate change and why the forthcoming climate conference in Stockholm is a singularly important opportunity to build on the progress made and to push for more ambitious and concerted actions. There is no time to waste, the scientists tell us, and we must leave no one behind.