Panelists: Barnaby Joyce, Minister for Agriculture; Tanya Plibersek, Deputy Opposition Leader; Akmal Saleh, Comedian; Cassandra Goldie, Head of Australian Council of Social Service; Nick Cater, Opinion editor with The Australian & author The Lucky Culture; and Ray Martin, Journalist and author.

Panelists: Malcolm Turnbull, Minister for Communications; Mark Dreyfus, Shadow Attorney-General; Dave Hughes, Comedian; Yolanda Vega, CEO of Australian Women Chamber of Commerce & Industry; and Janet Albrechtsen, Opinion columnist for The Australian.

Panelists: Eric Abetz, Liberal Senate Leader; Tony Burke, Shadow Finance Minister; Heather Ridout, Businesswoman & RBA board member; Yassmin Abdel-Magied, Founder of Youth Without Borders; and James Allan, Professor of Law, University of Queensland.

Panelists: Jamie Briggs, Assistant Minister for Infrastructure and Development; Anthony Albanese, Shadow Infrastructure Minister; Ged Kearney, President of the Australian Council of Trade Unions; Clive Palmer, Leader of the Palmer United Party; and Rhonda Cornum, Gulf war veteran & leader of US Army well being project.

Panelists: Josh Frydenberg, Parliamentary Secretary to the Prime Minister; Jason Clare, Shadow Communications Minister; Sue Morphet, Chair of Manufacturing Australia; Katharine Viner, Editor-in Chief, Guardian Australia; and David Bridie, Musician.

Panelists: George Brandis, Attorney-General and Minister for the Arts; Chris Bowen, Shadow Treasurer; Lisa Wilkinson, Journalist and television presenter; Marcia Langton, Professor of Indigenous Studies; and Sharri Markson, Media Editor, The Australian.

Panelists: Billy Bragg, Singer-songwriter and activist; Wendy Harmer, Editor in Chief, The Hoopla; Miroslav Volf, Evangelical theologian and author; Sussan Ley, Assistant Minister for Education; and Mark Butler, Shadow Minister for Environment.

Panelists: Rachel Griffiths, Film and television actress; Eddie McGuire, President of Collingwood FC and media personality; Lindsay Fox, Founder, The Linfox Group; Kelly O'Dwyer, Liberal Member for Higgins; and Richard Marles, Shadow Minister for Immigration and Border Protection.

Panelists: Mona Eltahawy, Egyptian author and commentator; Kenneth Roth, International Director of Human Rights Watch; Tim Wilson, Human Rights Commissioner; Ilwad Elman, Somalian peace and human rights activist; and Lucy Siegle, Ethics columnist The Observer.

Panelists: Dr Geoff Raby, Former Ambassador to China; Mei Yan, Businesswoman and media executive; Ma Tianjie, Program Director, Greenpeace East Asia; Cheng Lei, Television Presenter; and Guo Jian, Chinese Australian artist.

Panelists: Marise Payne, Minister for Human Services; Penny Wong, Opposition Leader in the Senate; Michelle Garnaut, Chef and restaurateur; Jacqui Lambie, PUP Senator-Elect for Tasmania; and Judith Sloan, Economist and businesswoman.

Panelists: Bob Carr, Former Foreign Minister; Kerry Chikarovski, Former State Liberal leader; Eva Cox, Author & social analyst; Brendan O'Neill, British Editor, Spiked Online; and Nigel Kennedy, British Violin Virtuoso.

Panelists: Malcolm Turnbull, Minister for Communications; Doug Cameron, Shadow Minister for Human Services; Sarrah Le Marquand, Opinion editor of The Daily Telegraph; Andrew Neil, British broadcaster and journalist; and Van Badham, Playwright and Columnist for The Guardian Australia.

Panelists: Christopher Pyne, Education Minister; Anna Burke, Former Speaker of the House; Mark Trevorrow, Actor and comedian aka ‘Bob Downe’; Pallavi Sinha, Human Rights & Immigration Lawyer; and John Roskam, Executive Director, Institute of Public Affairs.

Panelists: Sharman Stone, Liberal MP; Alannah MacTiernan, Shadow Parliamentary Secretary for Regional Development & Infrastructure; David Marr, Journalist and commentator; Innes Willox, CEO, Australian Industry Group; and Satyajit Das, Finance Expert.

Panelist: Joe Hockey, Treasurer.

Panelists: Thomas Keneally, Acclaimed author and historian; Tara Moss, Author; Richard Flanagan, Novelist; Jean Kittson, Comedian and author; and Tim Storrier, Artist.

Panelists: Cory Bernardi, Liberal Senator; Catherine King, Shadow Health Minister; Lawrence Krauss, Theoretical Physicist & Cosmologist; Lucy Turnbull, Former Lord Mayor of Sydney; and Rowan Dean, Associate Editor, Spectator Australia.

Panelists: Jane Goodall, Primatologist; Betty Churcher, Art educator; Peter Coleman, Conservative intellectual; Rosalie Kunoth-Monks, Central Australian Indigenous leader; and Stuart Rees, Founder of the Sydney Peace Foundation.

Panelists: Josh Frydenberg, Parliamentary Secretary to the Prime Minister; Ed Husic, Labor MP; Dee Madigan, Author and advertising director; Virisila Buadromo, Fijian women's advocate; and James Allan, Professor of Law, University of Queensland.

Panelists: Mark Carnegie, Venture capitalist and philanthropist; Mark Latham, Former Federal Opposition Leader; Tony Shepherd, Chairman, National Commission of Audit; Eva Cox, Author & social analyst; and Holly Ransom, Youth Advocate and Co-Chair G20 Youth Summit.

Panelists: Sarah Henderson, Liberal Member for Corangamite; Richard Marles, Shadow Minister for Immigration and Border Protection; Darryn Lyons, Mayor of Geelong; Elaine Carbines, CEO, G21 – The Geelong Region Alliance; and Richard Di Natale, Greens Senator and Health spokesperson.

Panelists: Joseph Stiglitz, Nobel Prize-winning Economist; Ross Garnaut, Distinguished Government Adviser; Judith Sloan, Businesswoman, Academic and Columnist; and Christine Wong, Director of The Center for Contemporary Chinese Studies.

Panelists: Philip Ruddock, Chief Government Whip; Tanya Plibersek, Deputy Opposition Leader; Charlie Pickering, Comedian and television presenter; Tania Major, Cape York indigenous leader; and Tim Hawkes, Author and Headmaster of The King's School, Sydney.

Panelists: Michael Kirby, Former High Court Judge; Nafsiah Mboi, Indonesian Health Minister; Françoise Barré-Sinoussi, French Nobel Prize winner & co-discoverer of HIV; Amanda Vanstone, Former Liberal Senator; and Nic Holas, Writer and HIV Activist.

Panelists: Barnaby Joyce, Minister for Agriculture; Mark Butler, Shadow Minister for Environment; David Suchet, British Actor; Louise Adler, CEO of Melbourne University Publishing; and Madonna King, Journalist and Commentator.

Panelists: Noel Pearson, Chairman, Cape York Partnership; Nova Peris, Labor Senator; Ken Wyatt, Liberal Member for Hasluck; Djawa Yunupingu, Deputy Chairman, Yothu Yindi Foundation; Joe Morrison, CEO, Northern Land Council; and Dhäŋggal Gurruwiwi, Gälpu Clan Elder.

Panelists: Greg Combet, Former Labor Minister; Sussan Ley, Assistant Minister for Education; Jennifer Robinson, Human Rights Lawyer; John Stackhouse, Visiting Christian Scholar; and Simon Breheny, Editor of FreedomWatch.

Panelists: Warren Truss, Deputy Prime Minister; Penny Wong, Opposition Leader in the Senate; Clive Palmer, Leader of the Palmer United Party; Heather Ridout, Businesswoman & RBA board member; and John Falzon, National CEO, St Vincent de Paul Society.

Panelists: Gareth Evans, Former Australian Foreign Minister; Paul Kelly, Editor-at-large The Australian; and Elizabeth Pisani, Author and Indonesia commentator; Tasneem Chopra, Chair, Australian Muslim Women’s Center for Human Rights; and Ali Alizadeh, Iranian-Australian author and academic.

Panelists: Kay Hymowitz, Author and researcher; Lydia Cacho, Mexican journalist, author and feminist activist; Jane Caro, Author and social commentator; Kajsa Ekis Ekman, Swedish author and journalist; and Alissa Nutting, American author and academic.

Panelists: Jonathan Biggins, Entertainer and political satirist; Kim Williams, Author and former media executive; Concetta Fierravanti-Wells, Parliamentary Secretary to the Minister for Social Services; Sam Dastyari, Labor Senator; and Kate McClymont, Investigative journalist.

Panelists: Suzanne Cory, Molecular biologist & Boyer lecturer; Peter Doherty, Nobel Prize Winning Immunologist; Brian Schmidt, Nobel Prize Winning Astrophysicist; Marita Cheng, Engineer and founder of Robogals; and Ian Chubb, Australia’s Chief Scientist.

Panelists: Anne-Azza Aly, Counter Terrorism Expert; Michael Keenan, Minister for Justice; Mark Dreyfus, Shadow Attorney-General; Scott Ludlam, Greens Senator for Western Australia; and Randa Abdel-Fattah, Author and lawyer.

Panelists: Christopher Pyne, Education Minister; Wayne Swan, Former Treasurer; Kate Carnell, CEO of the Australian Chamber of Commerce and Industry; Laura Tingle, Political Editor, The Australian Financial Review; and Tony Barry, Actor.

Panelists: Catherine McGregor, Group Captain, Royal Australian Air Force Reserve; Greg Sheridan, Foreign Affairs Editor, The Australian; Julian Burnside, Barrister and Human Rights Advocate; Kelly O'Dwyer, Liberal Member for Higgins; and Kate Ellis, Labor Member for Adelaide.

Panelists: Catherine McGregor, Group Captain, Royal Australian Air Force Reserve; Greg Sheridan, Foreign Affairs Editor, The Australian; Julian Burnside, Barrister and Human Rights Advocate; Kelly O'Dwyer, Liberal Member for Higgins; and Kate Ellis, Labor Member for Adelaide.

Panelists: Brian Cox, Particle Physicist and TV Presenter; Matt Colwell aka 360, Rapper; Miranda Tapsell, Actress; Richard Gill, Artistic Director Sydney Symphony Education Program; and Nalini Joshi, Mathematician.

Panelists: Geoffrey Robertson, International human rights lawyer; Stuart Robert, Assistant Minister for Defense; Catherine King, Shadow Health Minister; and Rowan Dean, Editor, The Spectator Australia.

Panelist: George Brandis, Attorney-General and Minister for the Arts.

Panelists: Baroness Susan Greenfield, Neuroscientist, writer and broadcaster; Greg Hunt, Minister for the Environment; Anthony Albanese, Shadow Infrastructure Minister; Laura John, 2014 Australian Youth Representative to the UN; and James Paterson, Deputy Executive Director, Institute of Public Affairs.

Panelists: Malcolm Turnbull, Minister for Communications; Tanya Plibersek, Deputy Opposition Leader; Ben Elton, Comedy writer and author; Jonathan Holmes, Journalist; and Sarrah Le Marquand, Opinion editor of The Daily Telegraph.

Panelists: Noel Pearson, Chairman, Cape York Partnership; James Cromwell, Actor; Amanda Vanstone, Former Liberal Senator; Holly Ransom, Youth Advocate and Co-Chair G20 Youth Summit; and Waleed Aly, Host of RN Drive, columnist and author.