During the fOSSa 2010 conference in Grenoble, several speakers talked about how much Free/Open Source Software (FOSS) is important in two fields that are strictly related for the future of our society: education and environmental sustainability. This is a synthesis of the most important points that emerged in those talks (My full fOSSa report is in a separate page). Education? It needs FOSS, but it also needs to change Marc Humbert and Jean-Philippe Rennard explained how the Grenoble School of Management is using the Moodle Learning Management System to offer frontal and remote teaching and to produce Open Courseware.