The aviation sector is known for its significant contribution to global emissions, with aviation accounting for 3% of the total. However, British-American company ZeroAvia is pioneering a solution to this challenge by developing engines that run on hydrogen. These engines generate electricity to power aircraft, offering a emissions-free alternative for the industry. ZeroAvia is currently undergoing a rigorous certification process with both the Federal Aviation Administration (FAA) in the U.S. and the Civil Aviation Authority (CAA) in the U.K., emphasizing their commitment to safety and meeting regulatory standards. While the transition to hydrogen-powered aviation may come with a substantial upfront investment, it is believed that this shift could ultimately lead to cost savings in the long run. By reducing operational costs, the use of hydrogen could potentially make flying more affordable while significantly decreasing the carbon footprint of the aviation industry. ZeroAvia has set an ambitious timeline, aiming to have its first commercial products available by 2025. This milestone represents a significant advancement in the field of sustainable aviation and demonstrates the company's dedication to providing greener solutions for the future. By leveraging innovative technology and renewable energy sources, ZeroAvia is paving the way for a more sustainable and environmentally friendly aviation sector.