Geoengineering refers to large-scale interventions aimed at altering the Earth's climate system to combat climate change. These techniques can include methods like solar radiation management, which reflects sunlight away from the Earth, and carbon dioxide removal, which seeks to reduce greenhouse gases in the atmosphere. The goal of geoengineering is to mitigate the effects of global warming and its associated impacts, such as rising sea levels and extreme weather. However, these methods are still under research and debate, as they may have unintended consequences for ecosystems and weather patterns, raising ethical and environmental concerns.