Farming Hotspots (IMAGE) Columbia Climate School Caption A world map shows main sources of fine-particulate pollution: natural (brown); industrial (red) and agriculture (green). Credit Bauer et al., Geophysical Research Letters, 2016 Usage Restrictions Credit must be given. 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.