Air pollution is a “public health emergency”, according to the World Health Organization, with more than 90% of the global population enduring toxic indoor and outdoor air. This is a key concern for urban populations with heavy diesel vehicle use, and those living close to coal generation facilities and regular forest fires. Impacts are felt in their everyday lives - giving their children asthma and shortening their lifespan. These concerns are a major entry point for engagement in campaigns demanding cities and governments act to challenge fossil fuels. For millions of people in Southeast Asia, East Asia and India it has become a hot button to talk about health impacts, climate change, clean transportation and moving away from fossil fuels.