American Airlines, based in Fort Worth, has agreed to purchase 100 hydrogen-electric engines from ZeroAvia, a clean aviation innovator with a base in Hollister, California. These engines are intended to power regional jet aircraft and produce zero inflight emissions except for water vapor. The investment in ZeroAvia aligns with American Airlines' commitment to transitioning commercial aviation to a low-carbon future and achieving net-zero greenhouse gas emissions by 2050. ZeroAvia is flight testing a prototype for a 20-seat plane and working on designing engines for larger aircraft, such as the Bombardier CRJ700. The partnership with ZeroAvia is part of American Airlines' extensive fleet renewal effort, which has resulted in one of the youngest mainline fleets among major U.S. network carriers. Additionally, American Airlines is making industry-leading investments in sustainability by finalizing agreements for sustainable aviation fuel and carbon removal processes. ZeroAvia's hydrogen-electric engines offer significant cost savings and have received experimental certificates for testing from the FAA and CAA. In a similar vein, Southwest Airlines, based in Dallas, has launched Southwest Airlines Renewable Ventures to focus on sustainable aviation fuel. The airline aims to replace 10% of its jet fuel consumption with SAF by 2030 and has invested in SAF technology provider LanzaJet Inc. This collective effort in the aviation industry showcases a positive sentiment towards adopting clean energy solutions for a more sustainable future.