The main gas involved in global warming is carbon dioxide (CO2). This greenhouse gas is released primarily through human activities, such as burning fossil fuels for energy, deforestation, and various industrial processes. CO2 in the atmosphere traps heat, preventing it from escaping into space, leading to an increase in Earth's surface temperature—a phenomenon known as the greenhouse effect. Over time, higher concentrations of CO2 can result in climate change, causing severe weather patterns, rising sea levels, and other ecological impacts. Reducing carbon emissions is essential for mitigating these global warming effects and promoting environmental sustainability.