Track Mashup Submit Mashup Mashup: Air Travel Emissions Calculator Comments Government, Travel, Mapping, Environment, Science A Google Maps mashup that allows you to calculate the per-passenger greenhouse gas emissions created by a commercial airline flight between any two airports. Summary Comments (2) Followers (3) Summary Comments Followers Comments (2) Comment * Leave this field blank Post Comment chico 9:40 AM Jul. 21 2006 reply I had a bet with my friend that their car emmited more CO2 than my holiday flights... It turns out its too close to call, we both contribute over 2 tonnes of the greenhouse gas to global warming! Great Mashup paul 6:16 AM Oct. 01 2007 reply I love the mashup. I work in carbon offsetting for a large corporation. I\'d use your tool all the time, but I have one request? Can you put the distance in kilometres as well? The biggest carbon markets are in the EU at the moment, and no one uses miles there. It would be a great help.