When will all airplanes have 0 emissions?
Never… it’s starts with their construction, their build… and later with retirement
Yeah… You are absolutely right
Will get closer to that when they will fly with Hydrogen, made directly from water with solar energy.
Solar to Fuel. Hydrogen production from solar energy (list.solar)
However, Hindenburg fire is still fresh in minds of air travelers.
Do you have bibliography on that topic?
Solar water splitting?
It’s plenty online…