The International Energy Agency has expected global carbon dioxide (CO2) emissions to decline by 8% to 30.6 gigatonnes (Gt) this year, accomplishing levels last observed in 2010. The Global Energy Review 2020 has credited the sharp decline in emissions to the slump in energy demand during 1Q20. In perspective, the decline is estimated to be almost twice as large as all earlier declines since the end of World War II.