en: Solutions which spring to mind in this respect include a common traffic control system, stimulation of technological innovation for engines and promotion of alternative methods of transport for passengers and goods, i.e. trains for passengers and coastal navigation for goods.
el: Στα πλαίσια της έκθεση αυτής θα πρέπει να προστεθεί και η σκοτεινή πλευρά των παγκόσμιων αεροπορικών αγορών.