The term "warming pollution" refers to greenhouse gases that are released into the atmosphere and contribute to global warming. These gases, such as carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), trap heat in the Earth's atmosphere causing temperatures to rise. This increase in temperature is known as climate change or global warming. The burning of fossil fuels, deforestation, and other human activities release these pollutants into the air, exacerbating the problem. Therefore, "warming pollution" refers to any substance that contributes to an increase in Earth's temperature due to its greenhouse effect.