Scribble

Coming soon: These hydrogen-powered airliners would be zero-emission, say Airbus.

Airbus

<strong>Growing pains:</strong> Budget airlines carry more passengers and so are more fuel economical, but their exponential growth is having environmental impact.

Growing pains: Budget airlines carry more passengers and so are more fuel economical, but their exponential growth is having environmental impact.

Adrian Dennis/AFP/Getty Images

<strong>Tail end: </strong>Our reliance on flying needs to be curbed until we have sustainable fuel, say experts.

Tail end: Our reliance on flying needs to be curbed until we have sustainable fuel, say experts.

Eric Lee/Bloomberg/Getty Images

<strong>Elephant in the room: </strong>Everyone is keen to get back to travel -- but the climate crisis is still here.

Elephant in the room: Everyone is keen to get back to travel -- but the climate crisis is still here.

Kazuhiro Nogi/AFP/Getty Images

Tech-tastic: Airbus is testing hydrogen-powered planes, too.

Airbus

<strong>Road trip: </strong>If you can't go by train, car is still better than flying.

Road trip: If you can't go by train, car is still better than flying.

iStockphoto/Getty Images

<strong>Savor it: </strong>Nobody is asking you to stop flying entirely -- but they are asking you to fly less.

Savor it: Nobody is asking you to stop flying entirely -- but they are asking you to fly less.

d3sign/Moment RF/Getty Images

Cooking on gas: Airbus completed a test flight of an A380 powered entirely by SAF in March 2022.

Airbus

<strong>Mon dieu: </strong>Europe has a great railway network, like this high-speed train between Paris and Milan.

Mon dieu: Europe has a great railway network, like this high-speed train between Paris and Milan.

Patrick Leveque/Sipa/AP

<strong>Futuristic:</strong> While SAF is expected to do the heavy lifting in aviation's green revolution, alternative technologies are developing at pace, especially for the sub-1,000-mile range flight market.

Futuristic: While SAF is expected to do the heavy lifting in aviation's green revolution, alternative technologies are developing at pace, especially for the sub-1,000-mile range flight market.

Airbus