There's really no such thing as truly sustainable air travel, but you can do some things to reduce your impact - such as flying with airlines with newer aircraft or taking a virtual holiday.
When is it too hot to fly?
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Global travelers are being increasingly asked if they want to pay for local purchases in terms of their home country currency. Here's why you should resist the strong temptation to do so.
The true radiation risk from commercial flying has nothing to do with security scans. A radiation expert explains how much cancer risk the most frequent of flyers take on when they take to the skies.
Those backing Heathrow's proposed new runway want to depoliticise the issue entirely. But hard choices are inevitable.
The scene of the fatal crash at Essendon Airport, where authorities allowed extensive development between the runways and surrounding housing.
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Airport operators enjoy the privileged position in Australian planning law of being able to decide their own futures. Their exemption from state planning rules threatens orderly planning and safety.
Qantas's new non-stop route from Perth to London might be a watershed for travel times between Australia and Europe. But super-long-haul routes won't do much to cut aviation's greenhouse emissions.
Air traffic controllers are modernizing their systems.
AP Photo/Cliff Owen