The gas known as the main contributor to climate change is carbon dioxide (CO2). This greenhouse gas is primarily released into the atmosphere through human activities, such as burning fossil fuels for energy, deforestation, and industrial processes. Carbon dioxide traps heat in the Earth's atmosphere, leading to the greenhouse effect, which contributes to global warming and climate change. Elevated levels of CO2 have been linked to rising temperatures, melting ice caps, and changing weather patterns. Efforts to mitigate climate change often focus on reducing carbon emissions through renewable energy, increasing energy efficiency, and adopting sustainable practices to create a more balanced atmosphere.