ÌÇÐÄÆƽâ°æ

Global carbon dioxide emissions from fossil fuels and industry totaled 38.11 billion metric tons (GtCO₂) in 2025. Emissions are projected to have risen 0.87 percent in 2025 to reach a record high of 38.11 GtCO₂. Since 1990, global CO₂ emissions have increased by more than 69 percent.

Who are the biggest emitters?

°Õ³ó±ðÌýbiggest contributor to global GHG emissions is China, followed by the United States. China wasn't always the world's biggest emitter, but rapid economic growth and industrialization in recent decades have seen emissions there soar. Since 1990, COâ‚‚ emissions in China have increased by almost 450 percent. By comparison, U.S. COâ‚‚ emissions have fallen by 6.1 percent. Nevertheless, the North American country remains the biggest carbon polluter in history.Ìý

Global events cause emissions to drop

The outbreak of COVID-19 caused global COâ‚‚ emissions to plummet some 5.5 percent in 2020 as a result of lockdowns and other restrictions. However, this wasn't the only time in recent history when a major global event caused emissions reductions. For example, the global recession resulted in COâ‚‚ levels to fall by almost two percent in 2009, while the recession in the early 1980s also had a notable impact on emissions. On a percentage basis, the largest annual reduction was at the end of the Second World War in 1945, when emissions decreased by 17 percent.