Personal carbon trading is a way for people to reduce their carbon emissions. It works like this: Every person gets an amount of carbon credits, like a allowance of money. When you use energy or anything that produces carbon dioxide ( CO2 ), you spend your carbon credits. You can use less of those things or find other ways to reduce your carbon emissions and save those credits. If you save credits, you can sell them to other people who need extra to use. Carbon trading encourages people to lower their carbon emissions and gives them a way to save money by trading credits. In this way, people and businesses can work together to reduce their carbon footprint and protect our planet.