China is the Biggest Current Climate Polluter, but the U.S. is the Largest Historical Climate Polluter

Takeaway: regardless, both countries must increase efforts to reduce carbon pollution.
  • Recent data show that China is the biggest current emitter of greenhouse gases (GHGs), producing 22% of the world's current annual emissions.

  • The U.S. is the biggest historical emitter (27% of the world's cumulative GHG emissions since 1850), followed by the European Union (25%) and China (11%).

  • By 2030, India's annual emissions could equal or even surpass those of the U.S, if they don't pass additional policies to reduce emissions.