International air and marine travel have been left to one side in past negotiations to reduce greenhouse gas (GHG) emissions, but unless something is done, emissions from this segment of the world economy will form a progressively larger percentage of the total, especially as emissions fall in other activities. Will Sustainability Fly? broadens and contextualizes the knowledge resource available to academics, policy makers, air industry leaders and stakeholders, and interested members of the public. The book focuses on fuel, providing background in technical and policy terms, from the broadest reliable sources of information available, for the necessary discourse on society's reaction to the evolving aviation emissions profile.