What is the solution? I donīt know.
Does anyone know?
The solution would be the availability of cheap oil, which is probably a thing of the past.
Aviation is having a hard time because we can't possibly compete with other users, such as cars. In Europe we are very happy with paying $370 p/b to fill up our cars with the taxes included. The US will do the same, because people living in 'suburbia' have no other choice. If the supply/demand balance gets tighter the price will keep on rising until air travel is back to the days when only the rich could afford it. Oh, and algae oil costs $800 p/b.
In the mean time, wannabee's are investing 80k in flight training while both Shell's CEO and Exxon Mobil predicting peak oil within the next 8 years.
Crazy world.