Soot from aeroplane exhausts can linger in the atmosphere, seeding ice clouds which trap heat.
It's feasible to bring home at least some of the COVID-positive Australians stranded in India. Here's how we can do it while keeping infection risk at a minimum.
Last year, 189 countries – home to roughly 65% of the global population – cut themselves off from the world at some point. Borders are now reopening and travel resuming, but normal is a ways off.
A departure tax based on length of stay, not distance travelled, would be a more effective sustainable tourism strategy.
The pandemic has exposed inequalities in society. There is concern that tying freedoms to vaccinations may further disadvantage vulnerable groups.
The results from an emerging study suggest governments should act quickly if they plan to impose travel bans – before the virus can spread widely to other countries.
When planes fly from east to west, they are flying against a river of air called a jet stream. These air currents can make your flight longer or shorter, depending on which way you are going.
Several countries have made pledges to reduce their greenhouse gas emissions to zero by mid-century. But new research finds the remaining carbon budget will be depleted before we get there.
Scientists are experimenting with using dogs to sniff out people infected with COVID-19. But dogs aren't the only animals with a nose for disease.
If the tourism minister is worried about the wider social, economic and environmental impacts of visitors, he'd be better off banning cruise ships, not backpackers.
Academics and others concerned with benefitting from peer professional collaboration can use COVID-19 disruptions as an opportunity to improve conferences through smart design.
The tourist traps of Sydney, Melbourne and Queensland have the most to lose. Regional towns and coastal resorts have the most to gain.
Though air travel has boosted presidential campaigns for decades, the 2020 pandemic has underlined the importance of aircraft as the quickest and safest way to campaign.
Citizens of the United States and Canada have both had the exact same information regarding the spread of COVID-19, but their attitudes about flying are very different.
A disaster is looming for remote Canadian communities after Air Canada cancelled 30 regional routes. It threatens the rights of all Canadians to be connected to the national transportation system.
Recycling and turning off the lights are good steps towards a more sustainable society, but they are not nearly as important for the climate as reducing meat consumption, air travel and driving.
The airlines that survive this crisis will have to be strategically creative.
Virgin Australia's cutbacks leave a big question unanswered. Can it ever become a sustainable competitor to Qantas under private equity ownership?
Will the joy and exhilaration of travel return after the COVID-19 pandemic? Yes, but with a new value proposition built around safe and secure travel.
The Swedish 'flight shame' campaign was a runaway success. We asked those it affected how it influenced their travel behaviour.