Raimond Gaita has published widely to academic and non- academic audiences. In 2009, the University of Antwerp awarded Gaita the degree of Doctor Honoris Causa ‘for his exceptional contribution to contemporary moral philosophy and for his singular contribution to the role of the intellectual in today’s academic world’.

Dr Anne Summers AO is a best-selling author, journalist and thought-leader with a long career in politics, the media, business and the non-government sector in Australia, Europe and the United States. She is author of nine books, including the classic Damned Whores and God's Police, Ducks on the Pond, The Lost Mother, and The Misogyny Factor.

Gregory Phillips is from the Waanyi and Jaru peoples, and comes from Cloncurry and Mount Isa. He is a medical anthropologist, with thirty years’ experience in leading change in cultural safety, healing and decolonisation.
Gregory is Chief Executive Officer of ABSTARR Consulting, is a Professor of First People’s Health, and serves on several boards and committees, including chairing the Ebony Institute, the Cathy Freeman Foundation and AHPRA’s Aboriginal and Torres Strait Islander health strategy group.

Associate Professor Duffy is an astrophysicist at Swinburne University creating baby universes on supercomputers to understand how galaxies like our Milky Way form and grow within vast halos of invisible dark matter.

He is attempting to find this dark matter as part of SABRE, the world’s first dark matter detector in the Southern Hemisphere at the bottom of a gold mine in Stawell, Victoria. He is also an Associate Investigator in two ARC Centres of Excellence investigating the origin of matter (CAASTRO-3D) and seeing the Universe with gravitational waves (OzGrav).

Mark Colvin is an Australian journalist, filmmaker and broadcaster. He has been the presenter of PM, one of the flagship Australian radio current affairs programs on the ABC Radio network, since 1997.