Which is the major green-house gases emitting country?

Carbon dioxide (CO2) also known as a greenhouse gas is an odorless gas that is highly important to life on Earth. China is the largest emitter of carbon dioxide gas in the world with 10.06 billion metric tons in 2018. The U.S. is the second-largest emitter of CO2, with approximately 5.41 billion metric tons of carbon dioxide emissions in 2018.