The video discusses the challenges of electrifying long-distance travel due to current battery limitations. It highlights the high cost and supply issues of biofuels and the potential of synthetic fuels as environmentally friendly alternatives. Airlines are actively working on sustainability by increasing the availability of sustainable fuels. Gas turbines will remain essential for the next few decades, with a focus on improving their efficiency and exploring hybridization for long-haul journeys.

Discuss the importance of improving gas turbine efficiency in aviation.

What is the significance of hybridization for long-haul journeys in aviation?