Set up by the United Nations, World Environment Day aims to raise international awareness of environmental issues and encourage action to protect our world and environment. The theme for this year’s day is ‘Air Pollution’ with China acting as the host country for the official celebrations. Air pollution is the cause of 7 million premature deaths each year and according to the UN, 9 out of 10 people breathe polluted air. Understanding the effects and taking relevant action are steps which will help to #BeatAirPollution. Test your knowledge of air pollution and its effects with our quiz!