> Frequent flyers emit a disproportional amount of green house gases. Citation needed. One source says it causes 4-9% of climate change. http://www.davidsuzuki

> Frequent flyers emit a disproportional amount of green house gases. Citation needed. One source says it causes 4-9% of climate change. http://www.davidsuzuki.org/issues/climate-change/science/climate-change-basics/air-travel-and-climate-change/ http://www.davidsuzuki.org/issues/climate-change/science/cli... Define disproportionate and "frequent flyer". If you've ever been on an airplane before, you probably count as a frequent flyer to most of the world's population.