“…The most prominent learning outcome is the increase of new knowledge and practical skills linked to sustainability-related issues, which range from the understanding of concepts and technical information to the ability to implement environmental management practices (Diduck and Mitchell, 2003;Sims and Sinclair, 2008;Chao, 2017;Phuong et al, 2019). Reflection and the reconstruction of values, norms and IJSHE 21,5 perspectives represent another learning outcome in which learners become more empathetic and compassionate (Young and Karme, 2015), move away from self-interest to more collective concerns (Sims, 2012), give more importance to environmental resources and social justice (Moyer et al, 2016) and sometimes gain a sense of unity and interconnectedness with their natural and social surroundings (de Angelis, 2019). The latter is also related to changes in life perspectives and worldviews (Feriver et al, 2016;Papenfuss and Merritt, 2019).…”