This lecture covers various aspects of climate economics, including economic activities as sources of greenhouse gases, climate change impacts, adaptation strategies, mitigation measures such as abatement in industry and net zero energy buildings, carbon capture and storage, bioenergy with CCS, land use and forestry, and methane abatement. The instructor discusses the theoretical potentials and challenges of these strategies, emphasizing the importance of international cooperation and policy instruments. The lecture also addresses the role of economic growth, carbon pricing, and consumption losses in achieving climate goals, highlighting the ancillary benefits of reduced air pollution. Furthermore, it explores determinants of abatement costs, technical potentials, and the significance of climate policy regimes in shaping global efforts towards mitigating climate change.