Do you have any sources on that? I’d love to know the per-passenger, per-distance exhaust output of the various airplane classes. A packed trans-Atlantic flight is probably not as damaging as the same voyage on a ship that burns the worst dogshit-grade bunker oil, but I seriously doubt that regional flights, regardless of fuel, could reach anywhere hear the exhaust- and fuel-efficiency of high speed trains.
Do you have any sources on that? I’d love to know the per-passenger, per-distance exhaust output of the various airplane classes. A packed trans-Atlantic flight is probably not as damaging as the same voyage on a ship that burns the worst dogshit-grade bunker oil, but I seriously doubt that regional flights, regardless of fuel, could reach anywhere hear the exhaust- and fuel-efficiency of high speed trains.
If you packed that ship too, it would easily beat the flight. A ship can just pack on orders of magnitude more passengers.