Justin Bieber's graffiti global tour continues, Berlusconi lingers, Pope Francis surprises again, and other notable quotes from around the world...
Cleaner aviation fuel
Fees imposed on the airline industry should be funneled into a climate fund.
High-flying ambitions for the sector
Hydrogen and electrification
Meanwhile, Rolls-Royce is looking to smash the speed record of electrical flights with a newly designed 23-foot-long model. Christened the Spirit of Innovation, the small plane took off for the first time earlier this month and successfully managed a 15-minute long test flight. However, the company has announced plans to fly the machine faster than 300 mph (480 km/h) before the year is out, and also to sell similar propulsion systems to companies developing electrical air taxis or small commuter planes.
New aircraft designs
International first class will be very nearly a thing of the past.
Aerial view of Rome's Fiumicino airportcommons.wikimedia.org
Data privacy issues
Auckland Airport, New Zealand
The billion-dollar question: Will we fly less?
40% of Swedes intend to travel less
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