Improved version: Band Score 5.5 Air pollution is a major environmental problem in the modern world, and its effects are not confined to a single location. Due to atmospheric circulation, pollutants can travel across countries and even continents, making this a global issue that affects all populations, not only those residing in urban centres. One key reason for the widespread dispersal of air pollution is the action of wind. When factories and vehicles emit harmful gases and particulate matter, these substances are carried high into the atmosphere, where they can remain for extended periods and cross international borders. For instance, smoke from forest fires in one nation frequently deteriorates air quality in another located thousands of kilometres away, demonstrating that pollution does not recognise political boundaries. Moreover, air pollution exerts planetary consequences. It significantly contributes to climate change and global warming through the release of greenhouse gases such as carbon dioxide, which trap heat and raise the Earth's temperature. This phenomenon results in the melting of polar ice caps and rising sea levels, which impact all countries. Additionally, polluted air has adverse effects on human health, causing respiratory conditions, asthma, and other diseases worldwide. In conclusion, air pollution is a serious global challenge. Because it can travel long distances and harm both the environment and public health, international cooperation is essential for finding effective solutions. Countries must work together to reduce emissions and transition to cleaner energy sources.