Even before sustainability climbed up the global agenda, aviation had every incentive to cut its fuel consumption and therefore emissions. Although there has been real progress, there is also much work still to be done, and major challenges lie ahead for aviation.

These challenges will encompass not only new technology, including airframe and propulsion types that will make aviation cleaner and more efficient, but also a host of regulatory hoops through which the aviation community must pass.

Aviation Week Network continues to explore the ongoing initiatives underway.