Assertion: airbus's aircraft | /r/HasProperty | co2 per passenger km
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text: Update from OP; I've noticed that there is a section on CO2 very briefly within the fuel subsection, but just to clarify my point above (incase anyone decides what is there is enough) - whilst CO2 emissions from a given value of fuel are vital, efficiency of the engines, loading and other factors are are important in determining a useful figure that can be used to compare with other aircraft, that is CO2 per passenger km (CO2 per km is less relevant for aircraft because a small plane would emit substantially less CO2 than an a380 but since it would typically carry 100 times less passengers, the foorprint per passenger would be much greater.