3 August 2015: Panellists: Neil deGrasse Tyson, Astrophysicist & Science Communicator; Ranjana Srivastava, Oncologist and Author; Adam Spencer, Broadcaster and Maths Geek; and Beth Fulton, Mathematician and Marine Scientist, CSIRO.

27 July 2015: Panellists: Annastacia Palaszczuk, Premier of Queensland; Archbishop Mark Coleridge, Catholic Archbishop of Brisbane; Ron Boswell, Former Nationals Senator; and Anne Tiernan, School of Government and International Relations, Griffith University; and Monica Bradley, Innovation strategist.

20 July 2015: Panellists: Tim Fischer, Former Deputy Prime Minister and author; Alan Jones, Radio Broadcaster; Jacqui Lambie, Independent Senator for Tasmania; Mark Butler, Shadow Minister for Environment; and Katherine Teh-White, Managing director, Futureye.

13 July 2015: Panellists: John Hewson, Former leader of the Liberal Party; Amanda Rishworth, South Australian Labor MP; John Stackhouse, Visiting Christian Scholar; Michael Ware, War correspondent and filmmaker; and Alex Oliver, Director, Polling Program, Lowy Institute.

6 July 2015: Panellists: Vrasidas Karalis, Professor of Modern Greek; Richard Marles, Shadow Minister for Immigration and Border Protection; Larissa Waters, Queensland Greens Senator; Trisha Jha, Centre for Independent Studies; and Greg Sheridan, Foreign Affairs Editor, The Australian.

29 June 2015: Panellists: Lawrence Krauss, Theoretical Physicist & Cosmologist; Anne Aly, Counter Terrorism Expert; Tanya Plibersek, Deputy Opposition Leader; Tim Wilson, Human Rights Commissioner; and Paul Kelly, Editor-at-large The Australian.

22 June 2015: Panellists: Linda Tirado, American anti-poverty campaigner; Steve Ciobo, Parliamentary Secretary for Foreign Affairs and Trade; Joel Fitzgibbon, Shadow Minister for Agriculture; Dee Madigan, Author and advertising director; Grahame Morris, Political strategist; and Antony Hegarty, Singer of Antony and The Johnsons.

18 June 2015: Panellists: Professor Dennis Altman, Gay rights activist and author; Paul Capsis, Entertainer; Julie McCrossin, Broadcaster and journalist; Fred Nile, Conservative Morals Campaigner; Julia Doulman, Transgender Woman; and Katherine Hudson, Founder, Wear it Purple.

15 June 2015: Panellists: Bronwyn Bishop, Speaker of the House of Representatives; Luca Belgiorno-Nettis, Founder, The newDemocracy Foundation; Noel Pearson, Chairman, Cape York Partnership; Gillian Triggs, President, Australian Human Rights Commission; and Bret Walker, Magna Carta Committee.

8 June 2015: Panellists: Christine Forster, City of Sydney Councillor; Dr Cornel West, Scholar and Poet; Philip Ruddock, Special Envoy for Citizenship; Katy Gallagher, Senator for the Australian Capital Territory; and Bates Gill, CEO of US Studies Centre.