Carbon sequestration refers to the process of capturing and storing carbon from the atmosphere and other carbon-containing substances such as fossil fuels. Carbon dioxide is the most common greenhouse gas emitted by human activities, and its accumulation in the atmosphere contributes significantly to climate change. Carbon sequestration involves removing carbon dioxide from the air or reducing its emissions and storing it in natural or artificial reservoirs. Natural carbon sinks include forests, oceans, and soil, which can absorb and store carbon for centuries or even millennia. Artificial carbon sequestration techniques include carbon capture and storage (CCS), where carbon dioxide is captured from industrial processes or power plants and stored underground. Other approaches include enhanced weathering, biochar, and afforestation. Carbon sequestration is considered an important tool in mitigating climate change by reducing the concentration of greenhouse gases in the atmosphere.