Perhaps try and reduce journeys by air. Reduce the new business growth, get rid of the low cost operators who have introduced lower socio economic group travellers into the equation and return flying to what it was in the past. Restrain the business psychopaths-dominant males who lead us and wreak havoc. Control pilot entry levels and qualifications to a ' Royal College of Airline Pilots 'with peer group vetting. Flatten the 11 year cycle. Alas, all30 years too late. Good luck Koi