Forests seem like a carbon conundrum as they function as carbon absorbers and emitters. When forests are disturbed or destroyed due to events like forest fires, deforestation, or land conversion for human purposes such as agricultural activities or infrastructure development, they can release large amounts of carbon dioxide back into the atmosphere. Under normal conditions, forests act as carbon sinks by absorbing CO2 from the atmosphere during photosynthesis and storing it in their biomass, including trunks, branches, leaves, and roots. Even when trees die, their degradation occurs slowly, resulting in a gradual release of carbon. Additionally, carbon is stored in forest soil for centuries, depending on soil type, climate, and microbial activity. Conditions such as forest age, tree types, and changes in temperature and precipitation patterns can also impact the ability of forests to sequester carbon. Human activities, such as afforestation (planting trees on previously non-forested land), reforestation (replanting trees in deforested areas), sustainable forest management, and reducing emissions from deforestation and forest degradation (REDD+), can all influence the role of forests in the carbon cycle. While forests play a crucial role in sequestering and storing carbon, their net effect on the climate depends on various factors, including land use changes, management practices, and interactions with the changing climate. Balancing conservation efforts with the sustainable use of forests is key to maximizing their potential as carbon sinks while meeting other societal needs. This chapter contains information about the role of forests as carbon emitters and absorbers, maintaining the carbon exchange in equilibrium.