Every year, the 5th of June is observed as the World Environment Day to “encourage worldwide awareness and action to protect our environment”. For 2019, the theme is ‘Air Pollution’, and the host country is China. On this occasion, Research Matters caught up with three leading scientists from the country that are actively pursuing research on different aspects of air pollution. The three researchers, Prof. A R Ravishankara, Prof. S K Satheesh and Prof. Navakanta Bhat shared their work and thoughts on the ‘burning’ problem of air pollution.