Outdoor air pollution comes from multiple sources including industry, transportation, agriculture, waste management, and households. It poses major health risks, causing around 7 million premature deaths per year due to diseases like pneumonia, stroke, heart disease, and lung cancer. Certain groups are more impacted by air pollution, including children, women, and outdoor workers. Solutions to reduce air pollution involve investing in clean energy, improving waste management, reducing agricultural waste burning, making more sustainable cities, and providing access to clean cooking and heating alternatives through public transportation. Air pollution is a global problem that requires international cooperation.