British-American company ZeroAvia is making significant strides in the field of sustainable aviation by developing engines that run on hydrogen to power aircraft without emissions. Located in the Cotswolds, their research and development facility is actively working on integrating hydrogen electric engines into various aircraft models like the Dornier 228 and Cessna Caravan, showcasing successful flight tests. ZeroAvia's efforts have garnered recognition, earning them a spot in TIME Magazine's top 'green tech' companies list. The company has also established a fuel cell research lab in Kent, England, and is advancing technology in California while retrofitting a 76-seat Alaska Airlines Dash 8 plane with a hydrogen-electric propulsion system in Washington state. By collaborating with regulators in the U.K. and the U.S., ZeroAvia aims to certify its innovative products for commercial use. With investments from major airlines and ambitious plans for expansion, ZeroAvia is poised to lead the way in the hydrogen aviation sector, aligning with the industry's shift towards sustainable practices and decarbonization strategies.