American Airlines has announced a strategic investment in hydrogen-electric engines in collaboration with ZeroAvia, a California-based hydrogen-electric aircraft developer. The agreement includes the purchase of 100 hydrogen-electric engines and increased investment in ZeroAvia's Series C financing round. These engines utilize hydrogen in fuel cells to generate electricity, promoting low-temperature water vapor emissions and aligning with American Airlines' goal to achieve net-zero greenhouse gas emissions by 2050. The partnership aims to propel the commercial aviation industry towards a low-carbon future through innovative propulsion technologies. ZeroAvia is currently conducting flight tests for a 20-seat plane prototype and designing engines suitable for larger aircraft models, such as the Bombardier CRJ700 used on regional routes. Despite the potential of hydrogen as a sustainable fuel source, challenges related to high production costs compared to conventional fossil fuels persist. Other industry players like United Airlines and Airbus are also exploring hydrogen's use to mitigate emissions. In related news, Shell has paused construction at its biofuels facility in the Netherlands due to market conditions, while Amplify Cell Technologies has initiated the construction of a lithium iron phosphate battery cell factory in Mississippi. The battery cell factory, a joint venture between Accelera, Daimler Trucks & Buses U.S. Holding LLC, and PACCAR, is set to commence production in 2027 with an annual capacity of 21 gigawatt hours. Furthermore, ERM and Dolphyn Hydrogen have launched offshore trials in South Wales for the Dolphyn Hydrogen process, integrating electrolysis, desalination, and hydrogen production on a floating wind platform to support a low-carbon future.