Which prospect scares you most: undergoing surgery with a general anaesthetic that isn’t working? Or a global pandemic that wipes out hundreds of millions of people?

Indigenous recognition, constitutional reform and a future Australian republic. For Megan Davis it’s all connected. Australia can’t move to a republic before we’ve addressed the issue of Indigenous sovereignty and we’ve dealt with the unfinished business of the past.

Does the conservative side of politics have a problem with women? That's been the argument since the recent resignation of several high profile Liberal politicians. The Labor Party's affirmative action quota system has enabled many more women to enter parliament. Would this work for the Liberals?

Could the digital money Bitcoin become the world’s primary currency – pushing out paper money and hard coins? Tone Vays believes that Bitcoin can solve the issues faced by traditional finance institutions.

10 years ago the World Health Organisation called for the ‘health gap’ to be closed in a generation. What’s been achieved in the last decade?

Are China and America on a collision course? China has ambitions to be the dominant power in Asia. Is there room for two superpowers or is military conflict inevitable?

Conspiracy theories stretch from the absurd to the dangerous with far-reaching consequences. But what makes them so hard to debunk? Why do people believe in these theories?

Faced with the rising tide of asylum seekers governments are resisting the UN Refugee Convention and building legal and physical barriers to keep them out. Can international law hold governments to account?

Ageism can adversely affect health outcomes and longevity. Other social determinants of ageing include income, education, where you live, and whether you're marginalised due to gender, sexuality, race, or disability.

The legacy of Ancient Rome is still felt today in western culture in areas such as government, law, language, architecture, engineering, and religion.