Will travelling by plane ever be carbon neutral? Researchers have their doubts

The “decarbonisation” of air travel has become the driving question of the Paris Air Show, which opened its doors on June 19 outside Paris. Striving to build a game-changing “green plane”, the aviation industry is betting heavily on the development of sustainable fuels. From cooking oil to hydrogen planes, FRANCE 24 breaks down the possible pathways to carbon-neutral air travel – and why some may never make it off the ground.