From a workshop on France's Atlantic coast, Bertrand Piccard and his team are working on the Climate Impulse project, aiming to fly a liquid hydrogen-powered plane around the world non-stop. This innovative approach could significantly impact the aviation industry by promoting greener commercial flights. The project, which began last February, has made progress in designing the plane that relies on super-cold liquid hydrogen split from water molecules using renewable electricity. While the first test flights are planned for 2022 and the round-the-world trip for 2028, the project faces challenges in untested technologies and scalability. The team has built the cockpit shell and started on the wing spar, focusing on ensuring efficient hydrogen consumption and maintaining ultra-low temperatures. Despite the long road ahead, experts view green hydrogen as a promising solution for sustainable aviation, potentially reducing carbon emissions in the industry. Liquid hydrogen's use in aviation, particularly for long-distance flights, brings hope for a cleaner future, although scaling up the technology remains a significant task. With the potential to revolutionize air travel, Climate Impulse's liquid hydrogen-powered plane represents a step towards a more sustainable aviation industry.