Energy transitions aim at economic prosperity through "green-collar" job-creation, greater energy "independence", and/or reduced emissions. These objectives imply creating policy-supported national renewable technology industries, ideally reducing clean energy costs to a point where support...

There is an increasing global interest in sustainable aviation technologies as a result of concerns associated with the carbon-intensive nature of the industry and the imminence of reaching peak oil. Available options such as biofuels, liquid hydrogen and electric propulsion will not only impact...