On May 24, the International Energy Agency released a report finding that fossil fuel combustion’s worldwide carbon dioxide emissions reached 31.6 gigatons in 2011, up 3.2% from 2010 and a record. Coal accounted for 45% of those emissions, with oil at 35% and natural gas at 20%, with developing nations accounting for all of the emissions increases over 2010 numbers. Chinese emissions increased 9.3% in 2011, largely due to increased coal combustion, while United States emissions dropped by 1.7% over the same period.