Multipollutant Index (IMAGE) Max-Planck-Gesellschaft Caption The MPI (Multipollutant index) describes the degree of air pollution, by summarizing pollutants with effects on human health (i.e. ozone, particulate matter, carbon monoxide, sulfur oxides and nitrogen oxides) in a single value. A natural scenario (without human-induced emissions) is here compared with a simulated scenario for 2025 (top) and 2050 (bottom). The simulations describe the air pollution as a global problem. The yellow tint base means that the level of air pollution can affect human health. Orange and red areas indicate the calculated hotspot with hazardous air quality. Especially Asia and India are affected. Credit MPI for Chemistry Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.