although working mainly with organisations and the general public, nef has from time to time run projects aimed at educating young people. this includes the energy envoys project, aimed at encouraging students undertaking the duke of edinburgh's award to become involved in saving energy. in 2007-8 it launched a global warming game called logicity, funded by the defra climate challenge programme, in an attempt to raise interest in the subject among young adults. for several years it ran a mobile education unit called the green energy machine.