A call more more preventative mental health care - and fighting unnecessary wars.

What does the case of Steven Avery, from 'Making a Murderer', tell us about the US justice system?

Countering the corrosive effect of violent images.

Decollectivisation from below was an unintended consequence of a decade of violent purges and entrenched fear.

Standing up to democracy's critics and restoring faith in the system.

Elon Musk plans to build a sustainable colony on Mars, a city of a million people. The first spaceships are to leave for the red planet in 2022. And his ambition doesn’t stop there. He sees humans turned into a multi-planetary species. At the International Astronautical Congress, Elon Musk presents the next-generation spaceship – a rocket bigger than an A380 plane. Work on the new rocket has already began.

Peter Greste discussing his imprisonment in Egypt and the threats posed to frontline journalism in period since 9/11.

The quality of news reporting is under threat as seasoned journalists are targeted in conflict zones and fake news is manufactured for social media.

The Cold War and the 1956 Melbourne Olympics.

The trends, challenges and future of the rapidly changing music sector.