SO2 (sulfur dioxide)

Sulfur dioxide (SO2) is a colorless gas with a sharp smell, often produced from burning fossil fuels like coal and oil. It's commonly found in industrial emissions and volcanic eruptions. SO2 can contribute to air pollution, leading to respiratory issues in humans and environmental problems like acid rain, which harms ecosystems and buildings. While it plays a role in the Earth's atmospheric chemistry, regulating its levels is crucial for public health and environmental protection. Efforts to reduce SO2 emissions are important for improving air quality and combating climate change.