By the 4000s, advanced climate engineering will be employed to manage and stabilize Earth’s climate. Techniques such as geoengineering, including solar radiation management and carbon capture, will be used to address climate change and its impacts. Massive-scale projects could include altering cloud cover, reflecting sunlight, or removing CO2 from the atmosphere. These methods will complement global efforts to reduce greenhouse gas emissions and adapt to climate changes. Ethical considerations and environmental risks will be central to the implementation of such technologies, ensuring that they are used responsibly and effectively to support global climate stability.