Stratospheric Aerosol Injection (SAI) is a geoengineering technique aimed at reducing global warming. It involves releasing tiny particles, such as sulfur dioxide, into the stratosphere to reflect sunlight away from the Earth. This process mimics the natural cooling effect observed after large volcanic eruptions. The goal of SAI is to lower global temperatures and mitigate the impacts of climate change. However, it raises concerns about potential side effects, such as changes in weather patterns and impacts on ozone levels. Ongoing research is needed to understand its effectiveness and risks fully.