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Forget everything you've heard about airlines and CO2 emissions. The news is much worse than anyone thought.
A recently disclosed report finds that airlines are spewing 20 percent more carbon dioxide into the environment than previously estimated and the amount could hit 1.5 billion tons a year by 2025. That's far more than even the worst-case predictions laid out by the International Panel on Climate Change.
If you're looking to put that number in perspective, the European Union currently emits 3.1 billion tons of CO2 annually. Yup, that's the entire 27-nation, 457 million person EU.