Sally Warhaft is a Melbourne broadcaster, anthropologist and writer. She is the host of The Fifth Estate, the Wheeler Centre’s live series focusing on journalism, politics, media, and international relations, and The Leap Year, a Wheeler Centre podcast about Australians' lives in the fog of the Covid-19 pandemic. She is a former editor of the Monthly magazine and the author of the bestselling book Well May We Say: The Speeches that Made Australia.

Sally is a regular host and commentator on ABC radio and has a PhD in anthropology. She did her fieldwork in Mumbai, India, living by the seashore with the local fishing community.

Tim Flannery is a scientist, an explorer, a conservationist and a leading writer on climate change. He has held various academic positions including visiting Professor in Evolutionary and Organismic Biology at Harvard University, Director of the South Australian Museum, Principal Research Scientist at the Australian Museum, Professorial Fellow at the Melbourne Sustainable Society Institute, University of Melbourne, and Panasonic Professor of Environmental Sustainability, Macquarie University. His books include the award-winning international bestseller The Weather Makers, Here on Earth and Atmosphere of Hope. Flannery was the 2007 Australian of the Year. He is currently chief councillor of the Climate Council.

Katherine Teh-White is the managing director and founder of Futureye – a firm which provides market research, public policy, public affairs, risk communication, foresight and strategy and change management. Futureye operates in Australia, Asia and Europe and is currently expanding in the Americas. In the past three years, she has also founded WikiCurve – a two-way engagement platform tracking the progress of societal expectations.

She has won a number of awards including the Golden Target award from the Public Relations Institute of Australia (1994), Telstra Business Woman of the Year private sector awardee (2001) and Victorian Women’s Honour Roll (2003). She has been listed in Who’s Who of Australian Women from 2007. She worked actively for a decade to engage Australian companies to sign on to the UN Global Compact, participated in the leaders group with Kofi Annan UN Secretary General at UN Global Compact conference in New York USA (2004) and was provided an opportunity to speak to the leaders group at the 10 year anniversary in New York USA (2010).

John Grimes is the chief executive of the Australian Solar Council and the Energy Storage Council; both are not-for-profit organisations.

In his role as CEO of the Australian Solar Council, he has grown the profile and influence of the organisation as it has become the national voice of solar. The Energy Storage Council provides an independent forum for the energy storage industry, by networking and information sharing in this growing industry.