Climate Change: Professor Brian Cox clashes with sceptic Malcolm Roberts (2016) YouTube video, added by BBC News [Online]. Available at: https://www.youtube.com/watch?v=sG8gLt4GChg [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] (Accessed 5 September 2017).
Educational Development Unit, (2015) Paul Warwick: Sustainability Education in HE – towards a pedagogy of hope, challenge and controversy? [Video]. Available at https://vimeo.com/133751144 (Accessed 3 October 2017).