Zero emissions airlines do not and will not exist for decades. Newtonian laws mean that in a non-frictionless environment you have to expend energy to travel anywhere. We as a society have not yet managed to achieve large scale energy generating fusion reactors. (I really do hope we will succeed with fusion one day.) Fission power generation on an airplane is not being actively considered by main commercial transport vehicle manufacturers (except for a few heavy duty ice breakers taking tourists to the Arctic and Antarctic). For now, batteries to store energy from wind or hydro power are far too heavy for flights over long distances. Basic biology means that even a human being going for a stroll has higher CO2 emissions than one lying on the sofa. We're therefore stuck with carbon based energy sources for much of transport until at least 2050.
If you want zero transport emissions, it means staying in bed for the rest of your life. When you put the bed sheets in the washing machine, don't forget the CO2 you are creating. We all seek credit from our fellow humans when we do something good - it is human nature. Criticising Ascend for trying to do the right thing where they have the possibility of choice and expecting zero emissions... is frankly unrealistic. Some want to live like a Greta-inspired monk or nun. Others do not.
Last edited by davidjohnson6; 6th Jan 2024 at 16:11.