A carbon trading platform is developed allowing a series of end-to-end trading and accounting activities. Using this system, cities can map regions of high pollution, track changes over time and identify pollution sources. It could alert citizens to take preventative actions during times of poor air quality. It also provides governments and industry with reliable scientific data and analysis methods to take potential interventions reducing carbon emissions, and provide accurate data for carbon trading. Most importantly, Carbon could be the No. 1 commodity in the world. Carbon trading is a market mechanism and key instrument in the mitigation of climate change, specifically targeting on carbon dioxide reduction and global warming.