Originally Posted by
milkyway88
Yes it's all the bubbles in the champagne.
Seriously I think the CO2 calculation is something like -
CO2 produced by flight / Square Footage available x Sq Ft used by passenger = Passenger CO2 footprint.
As a business or first seat takes up for room, it produces more CO2.
Maybe time to start weighing passengers as well as luggage and base the price on the combined weight.