Last week the two-yearly Flemish Aerospace Group’s Technology Day was hosted at the university of Leuven in which a delegation of Hasselt university, including the research group environmental economics participated. Being a bit out of scope (in an auditorium called second law of thermodynamics…), we nevertheless managed to attract some attention towards sustainability assessments of the airline industry, specifically through the use of biofuels. Talking about the environment in a corporate milieu is always challenging, imagine introducing a bio-economical story to a group of aviation engineers! Partly (and possibly largely) due to an excellent presentation by Sebastien Lizin, we did foster some interest and who knows, some new projects relating to biofuels. And although such events are difficult to attend as an outsider to the industry, attending them might be crucial for achieving a university’s aims and goals. By encouraging interest in potential applications that otherwise would have been limited or even absent (due to the catchword of environmental economics: spill-overs), our research becomes worthwhile.