In a country like Colombia where war, poverty, and corruption dominate the public debate, we must explain why sustainable development makes sense and why it is development for all. The way we address energy, transport and waste management questions are inherently political because they define how we develop and who benefits from it. Let’s address these questions now when we still have time to shape the future of our cities. Let’s remember that a clean society means more than low carbon emissions and renewable energy – it means egalitarian, democratic, and more human places to live in.