Biofuel by default. Pay more for fossil fuel based travel.
Suggested by Mikael Winther & 1 Others
Suggested by Mikael Winther & 1 Others
Suggested by Mikael Winther & 1 Others
Bio fuel / green fuel as default, and having to pay more as a passenger if you want to fly on fossil based airplane fuel.
Suggested by Alf Tollefsen
Suggested by Alf Tollefsen
Use infrared heating to melt snow, ice, and frost without using chemicals
Suggested by Christian & 4 Others
Suggested by Christian & 4 Others
Charging mobile phones or other equipment from sunlight in the sky. «Day flights are always sunny»
Suggested by Daniel Bodenfors & 2 Others
Suggested by Daniel Bodenfors & 2 Others
Trains are sometimes faster door to door. GOT-STO takes ~3 hours to fly and 3 hours by train. CPH, MMX takes 5h by train and 3hrs by flight. Codeshare and EB-trainpoints
Suggested by Mikael & 2 Others
Suggested by Mikael & 2 Others
If you reduce the allowed weight for luggage from 23 kg to 15 kg or so, people might start to think if they really need all that stuff with them.
Suggested by Tomas
Suggested by Tomas
Long-haul flights to start descent 3-4 hours before touchdown.